They use ipv6 'auto' and then do the configuration on the wan6 interface. But how can an MTU issue break delegation and not everything else also? In wan zone input is dropped/rejected, so you do need specific allow rules for the DHCPv4/v6, ICMPv6 and other flows. 3. I believe this can rule out the firewall from the list. a 'trusted' VLAN for workstations, an 'IOT' VLAN and a 'guest' VLAN. This requires a solicitation (UDP src 546 to dst 547) and a response (UDP src 547 to dst 546). I installed tcpdump and captured the output when restarting the wan6 interfaces (ifdown wan6; ifup wan6): Found the problem. prefix ::/56 infinity; So the first thing I would do is use a custom dhcp6c config using the above example. Just like the LAN(br-lan) interface which is in the "lan" firewall zone. If there are still problems you can post the following for troubleshooting. The hint is hex from 0-F. Except where otherwise noted, content on this wiki is licensed under the following license:CC Attribution-Share Alike 4.0 International. It will work both for uplinks supporting DHCPv6 with Prefix Delegation and those that don't support DHCPv6-PD or DHCPv6 at all (SLAAC-only). Is there no config interface wan6 section in your network config? I noticed that in the config snipet that my ISP sent me there was no mtu=1492 in the wan interface. You are absolutely right, that is what was happening. Wish I knew why DHCPv6 was blocked as well, I found one other person who mentioned this so I'm wondering if it's the way an ISP deploys DHCPv6? I suggest to do a reset of the device to defaults and start from scratch. Maybe it is a problem with the latest version. I ended up using "option ipv6 1" with a static wan6 interface. What I was trying to say was when are the (wan) zone rules are applied? LinkSys WRT32X with latest OpenWrt 19.07.5 r11257, Spectrum cable Internet. DHCPv6 was blocked at the wan zone. odhcpd provides server services for DHCP, RA, stateless SLAAC and stateful DHCPv6, prefix delegation and can be used to relay RA, DHCPv6 and NDP between . Also you acknowledge that you have read and understand our Privacy Policy. By default, all INPUT traffic is allowed (for every zone and can individually be overwritten per zone) Here is what I see on the WAN interface that relates to ICMPv6/DHCPv6: But first explain why the wan interfaces are bridged and we'll get to the dhcp6. Hello all, I recently managed to get IPv6 from my ISP, so I could drop HE tunnel. By the way, I tried that adjusted to my case, but no joy. I have added the firewall rules shown above as those seemed to be the crucial part which was missing for a dynamic DHCPv6 PPP-based connection. My normal router is RSPro on 18.06.4, but since I tried too many variations I thought I test on a Carambola2 also 18.06.4 with clean install. # cat /etc/config/networkconfig interface wan I only add IPv6 assignment hint to my interfaces. The RG then hands out other /64 in this /60 to dhcpv6 client requests on the LAN, one /64 for each unique IAID. The problem seems to be with DHCPv6. Content may be missing or not representing the latest edited version. Do you see anything of interest in logread after ifdown wan; ifup wan ? In wan zone input is dropped/rejected, so you do need specific allow rules for the DHCPv4/v6, ICMPv6, and other flows. Try "option ipv6 auto", this should automatically spawn a virtual DHCPv6-PD interface. 1 will enable IPCP6 negotiation but nothing else, you'll need to manually configure a DHCPv6 interface then. save. Also you acknowledge that you have read and understand our Privacy Policy. The /etc/config/dhcp6c file controls the WIDE-DHCPv6 client package wide-dhcpv6-client configuration. Or create a new interface wan_6 section and use the same options/settings as wan6 does? The valid options of this section are listed blow. Using LEDE 17.0.1.4. Then they will end up with wan6 and wan_6, which I don't think is a good idea. I think the option mtu statement sets the MTU for physical interface Ive sent details of my config to my ISP and they are investigating their end. the ppp daemon gets launched with mtu 1492, Using the basic algorithm: PD Address Space / Number of LAN Ports = block size per port. MTU = 1500 is the proper value here if you want a 'pppoe mtu of 1492' Any ideas what is happening? Maybe OpenWRT will fallback to a different prefix length but I'm also not sure about this one. That applies to ingress traffic. This archive is an effort to restore and make available as much content as possible. However there was no prefix available from what I could see in the packet capture. It uses the first /64 from this /60 for the directly connected LAN network (wired and Wi-Fi). [Edit: Thanks for the tip on adding 'tcpdump'; I've added capture output below]. So there must have been something blocking the DHCPv6 packets in the firewall due to the bridge interface? (non-bridged) interfaces in case no delegated prefixes are available. If you do not agree leave the website. Filter IPv6 incoming traffic. But there is one issue, By setting the WAN6 as master, it relays the IPv6 DNS servers to the hosts on my LAN. Is there anyway to change that to hand out the correct prefix based on the vlans I have? DHCPv6-PD should work by default on OpenWrt. So if you set 1492 as MTU, eth0 MTU will be 1492 and I've got a PPPoE connection, with native IPv6. For prefix delegation to work downstream, there should be several /64 prefixes available (at least two, so that the Openwrt router would keep one for itself and its WAN side (=modem side) and assign the other for its LAN). Very clear and simple test. I guess, when the firewall is started, otherwise, it would make no sense. For an uplink with native IPv6-connectivity you can use the following example configuration. However, machines inside the network are only setting up link-local IPv6 addresses, so the SLAAC doesn't seem to be doing its thing. It also provides initial support for the new ath79 target, the. (for example, dhcpv4/6) SLAAC works fine, wan6 or wan_6 interface (option ipv6 in pppoe-wan 1 or auto, tried them both) has a correct IPv6 and can see it works with pings etc. Self-registration in the wiki has been disabled. (if the default input policy is set to drop/reject) This time I could see solicit, advertise, request and reply. Yes, change 1 to auto - they have different meanings. Weird, cause the IPv4 worked for years with this setting, and it is something I automatically configure in pppoe interfaces. On the OPNsense WAN interface it has a static IPv4 and does DHCPv6 with prefix delegation. It tries to follow the RFC 6204 requirements for IPv6 home routers. Too much confidence I guess and I got carried away from other operating systems. odhcp6c receives the advertise message but there is a problem with the packet format or something. When you search for odhcp6c in the luci process overview (or 'ps | grep odhcp6c' in terminal), what parameters/flags are applied to it? hide. PPPOE for the IPv4 wan, SLAAC on IPv6 wan, and DHCPv6 for prefix delegation. Doesn't matter. I've tried about every combination. By using the website, you agree with storing cookies on your computer. NAT66 and IPv6 masquerading. With this release the OpenWrt project brings all supported targets back to a single common kernel version and further refines and broadens existing device support. Here are config snippets that may be helpful: Thanks for the tip on adding 'tcpdump'. I'm not sure. Powered by Discourse, best viewed with JavaScript enabled, Dhcpv6 client doesn't complete negotiation, no delegated prefix, Wireguard interface disappears when wan goes down, [Solved] DHCPv6 issue, no Prefix Delegation, https://openwrt.org/docs/guide-user/network/wan/isp-configurations. The WAN interfaces came bridged that way out of the box, in the default configuration. I did not set anything up myself in this regard. I understand there are default wan6 firewall rules. IPv6 configuration. Sorry that I overlooked this. Because it is sent via multicast? But those rules are applied only when the wan/wan6 interface is up. Had IPv6 working great with DD-WRT on this device using DHCPv6 w/Prefix Delegation, prefix length /64, Radvd enabled. odhcpd is a daemon for serving and relaying IP management protocols to configure clients and downstream routers. At least this is how I interpret it. My config since the second post is this one: Maybe the auto spawned wan_6 interface doesn't enable delegation by default. Tracing packets was easy once tcpdump was installed. By using the website, you agree with storing cookies on your computer. IPv6 extras. Sometimes delegation doesn't work, then it starts working again. Now, what happens when someone changes the default input policy to drop/reject? This rule is not needed, you are not running a dhcp6 server on the wan interface, are you? Extensions to DHCPv6 also enable prefix delegation, through which an ISP can automate the process of assigning prefixes to a customer for use within the customer's network. Here is what I see on the WAN interface that relates to ICMPv6/DHCPv6: That is not correct. Maybe the auto spawned wan_6 interface doesn't enable delegation by default. It will try to acquire ipv6 for itself and a prefix for the lan. Did you enable/modify the default dhcpv6 firewall rule? But I think this is not the case, the rules are applied before the network is started. SLAAC works fine, wan6 or wan_6 interface (option ipv6 in pppoe-wan 1 or auto, tried them both) has a correct IPv6 and can see it works with pings etc. (-Ntry ?). I tried to remove it too and it worked! I don't need non-default firewall rules using option ipv6 1 on wan and option proto dhcpv6 on wan6. If you use 1 then you manually need to create wan6 interface and add all these options there. I'm also not sure how to configure the auto spawned wan_6 interface. Is the routing an issue for wan6 or with the wan_6 interface you get with ''option ipv6 auto''? After looking https://wiki.openwrt.org/doc/uci/network6#downstream_configuration_for_lan-interfaces I tried to make couple changes to my /etc/config/network file to look like this Are sure 60 will work? With prefix delegation, a delegating router (the BNG) delegates IPv6 prefixes to a requesting router (the CPE). I have configured wan and wan6 as interfaces in banip. Thanks, I have added the firewall rules shown above as those seemed to be the crucial part which was missing for a dynamic DHCPv6 PPP-based connection. WAN zone has default INPUT policy of DROP. Did the engineer mention which version of openwrt he was using? Is this correct. Then reboot the device. and launches the ppp daemon with the mtu specified. Basic Properties Seems your issue is not with the configuration then, maybe an incompatibility between odhcp6c and your ISP? Normally it will be shown under "IPv6 WAN Status" in the "Network" section like. If you want to contribute to the OpenWrt wiki, please post HERE in the forum or ask on IRC for access. I think tcpdump 'sees' traffic before iptables, at least for inbound traffic. Also make sure that your lan interface has option ip6assign 64 (or a larger prefix size) set to actually redistribute the received prefix downstream. I also have a Mikrotik device with dhcpv6 client and I would like to setup my OpenWRT to delegate prefix (/48 I got from HE) to be splitted to /60 to that mikrotik. No, he didn't mention the version, however I guess that he used the latest. . And then configure all the settings in the interface wan6 section. I have a support ticket with my ISP open already. The problem seems to be with DHCPv6. I am under the same impression, that tcpdump will capture traffic on the wire. Since you are using dhcp for wan and dhcpv6 for wan6 the default configuration will work out of the box. "option ipv6 1" under wan, so to configure wan6 manually. Does delegation work when you restart the wan6 interface? If you use the auto in ipv6 option in wan interface, then wan_6 is created automatically and you cannot configure it. The section of type dhcp6c named basic defines common client settings. I have expanded it with some of the information above. In May 2018, the OpenWrt forum suffered a total data loss. Do you have any other (alias) interfaces configured for eth0? Firewall gets started (default policy set to DROP, network is not up/configured yet). The key is to set dhcpv6-pd prefix-only so we only request an prefix via dhcpv6 and get our ipv6-address for eth0 via slaac WORKING CONFIG TO REQUEST AN /62 via IPv6-PD on Edgerouter-X on v1.10 The prefix delegation occurs between a provider edge (PE) device and customer premises equipment (CPE) using the DHCPv6 prefix delegation option. If not, what is blocking it? Is there any way to get some live debug output to see what might be going on? The documentation for IPv6 doesn't mention wan_6 dynamically created interfaces. The RG receives a /60 PD to a dhcpv6 IA-PD request it makes on its WAN interface from the broadband gateway router in the ISP network. Looks like for all the world like DHCPv6 requests are not going through the PPPoE link. This example requests a /56 sized prefix and DNS servers on wan and configures two /64 subnets out of the prefix on lan and loopback. What prefix length does your isp provide? CC Attribution-Share Alike 4.0 International, Specifies whether the DHCPv6 client should be started on boot, Enables additional debug information in the system log, Requests prefix delegation at the DHCPv6 server, Requests a permanent, non temporary address at the DHCPv6 server, Signalize a rapid commit two message exchange (, Request Network Information Service (NIS) server address (, Request Network Information Service (NIS) domain name (, Request Network Information Service V2 (NIS+) server address (, Request Network Information Service V2 (NIS+) domain name (, Request Broadcast and Multicast Control Service (BCMCS) address (, Request Broadcast and Multicast Control Service (BCMCS) domain name (. With tcpdump I can see solicit from OpenWrt and advertise from server. wan is not bridged by default, nor is it needed to allow dhcp. Sections A typical default configuration consists of one dhcp6c section with common settings and one or more interface sections, usually covering the lan and loopback networks. Hmmnow my LAN DHCPv4 leases are no longer working. A typical default configuration consists of one dhcp6c section with common settings and one or more interface sections, usually covering the lan and loopback networks. 14941 root 1028 S odhcp6c -s /lib/netifd/dhcpv6.script -Ntry -P0 -t120 pppoe-wan. I have made it work, with a few workarounds. The following firewall rules allow this to work: I reworked the option ipv6 section of the wiki a few days ago. What prefix length does your isp provide? Not sure if this was some defense measure from the ISP. Here is the interface config, again--out of the box plus my own IP assignments: I just manually unchecked "Bridge interfaces" in all of the interfaces, which seems to have gotten rid of the br-lan and br-wan interfaces, but still no change on the DHCPv6 side. Do you have banip, bcp38 or similar packages installed? Full IPv6 connectivity from router and lan. The OpenWrt community is proud to announce the first release candidate of the upcoming OpenWrt 19.07 stable version series. All defined options of this section are listed below. Default rules apply to interfaces that are not assigned to any zone. How to use OpenWrt behind a Freebox Crystal with IPv6 bridge, How to use OpenWrt behind a Freebox with IPv6 delegation, CC Attribution-Share Alike 4.0 International. IPv6 DHCPv6 Prefix Delegation Configuration ISP Customer Routers C1 C2 Hosts Verification ISP Customers C1 C2 The prefix delegation feature lets a DHCP server assign prefixes chosen from a global pool to DHCP clients. wan/wan6 sends dhcp request but can't receive the response because the wan/wan6 zone input allow rules are not yet applied. @shm0 thank you for the help and suggestions! Pinging IPv6 hosts from the router works as expected. Remember to redact passwords, MAC addresses and any public IP addresses you may have, Powered by Discourse, best viewed with JavaScript enabled, IPv6 trouble with DHCPv6 Prefix Delegation, https://openwrt.org/docs/guide-user/network/ipv6/start. Abstract. This is usually a user error. Yes, change 1 to auto - they have different meanings. That is what my ISP told me as well, they had trouble with autoconfiguration too. OpenWrt 19.07.0 first release candidate Installing and Using OpenWrt Had IPv6 working great with DD-WRT on this device using DHCPv6 w/Prefix Delegation, prefix length /64, Radvd enabled. How to use OpenWrt behind a Freebox with IPv6 delegation. It tries to follow the RFC 6204. requirements for IPv6 home routers. The odhcp6c command line looks fine to me. I had tried them both options, with auto (wan_6) and manual (wan6). I'm also not sure how to configure the auto spawned wan_6 interface. It incorporates over 3700 commits since branching the previous OpenWrt 18.06 release and has been under development for about one a half years. Most home routers have 4 LAN ports, so that a /56 will be divided into /60s to be allocated to the first tier of routers (Router A, Router B, Router C). Running LEDE 17.01.4 on a WR2543N. Regardless of that the pppoe interface still has the mtu set. You may also want to look at using dnsmasq for your RAs / dhcpv6 oprions etc instead of radvd + dhcp6s. IPv6 on L2TP softwire. With my edgerouter x. I just use the wizard enable DHCPv6 with Prefix Delegation /60 and I would get IPv6 and just works..but with OPENWRT I can get IPv6..but it's not working..help please..thanks. proftDecember 25, 2020, 8:52pm #1 LinkSys WRT32X with latest OpenWrt 19.07.5 r11257, Spectrum cable Internet. There is also no 'tcpdump' on this build so I can't inspect the raw network traffic. I'll need to discuss it with them tomorrow as well. If you do not agree leave the website. Thanks for the tip on adding 'tcpdump'. report. Other than the usual PPPoE negotiation and some failed DHCPv6 requests on the LAN side there's nothing. But I suppose that if something that important was buggy, it would affect others too. Strange, banip doesn't whitelist any upstream ipv6 addresses. However OpenWrt should reply with a request, instead it sends again solicit, server sends advertise and this continues indefinitely. They suggest the fixed wan interface with a reqaddress: force setting but nothing much else. I'm assuming I've done something dumb. I need some more packet tracing practice and learn better with real problems. If no, maybe something else is hindering odhcp6c from receiving the advertise message or The setup should be quite simple. Setting it to auto will spawn a virtual interface wan_6 (note the underscore) which takes care of the prefix assignment. If your . If yes, do you use the same version? This HOWTO explains how to configure OpenWrt to: Enable IPv6 on the Freebox. The engineer from my ISP asked me how's the troubleshooting going and he showed me his test raspberry running OpenWrt and connecting properly with almost defaults. I deleted the option and now everything is correct, eth0 1500 and pppoe-wan 1492. Perhaps it is an interface name thing - your "ipv6 option auto"==wan_6 compared to my "ipv6 option 1" == wan6. Is there a valid reason to bridge the wan interface? I already have "option ipv6 '1'" in the wan interface inside /etc/config/network. The OPNsense LAN interface is split up using 802.1Q VLAN tags for different trust groups, e.g. Regarding why it broke delegation and not something else, I have no idea. Lo and behold, IPv6 now obtains an IP! My ISP doesn't delegate an IPv6 prefix and I get a default /64 with my IPv6 addresses from my provider's CPE/Router. Very clear and simple test. In which configuration stanza? its the network.wan6.reqprefix='auto' in your text listing. Does this also apply to dhcpv6 traffic? And with what have you bridged the eth1.2 ? 11 comments. It defines basic properties and interface settings. In the ISP router I've enabled the 'exposed host' feature so its firewall is transparent. However, I think I was getting DHCPv6 responses with ''option ipv6 1'' and ''option proto dhcpv6'' on wan6. And remove the route6 config section. Hi! More thinking aloud about why you do but I don't. However, I think I was getting DHCPv6 responses with option ipv6 1 and option proto dhcpv6 on wan6. A number of ddwrt users , myself included prefer dnsmasq over radvd. However when I run 'ifstatus wan' I see the IPv6 address associated to the wan interface and nothing appears on wan6. I wonder why the wiki page recommends this setup? opkg update opkg upgrade odhcpd-ipv6only Pico July 27, 2021, 7:17am #14 on your downstream router, there is the "Request IPv6 prefix length" setting on the WAN interface on the "General Settings" tab. I will have a play once I am allowed to fiddle with the router. The DHCP address on the PPPoE tunnel appears on wan instead of wan6 and nothing else happens, there isn't even a IPv6 route created. The Freebox is a popular Internet router delivered by French ISP Free to its customers. So 60 should work fine. Not sure if this was some defense measure from the ISP, //edit This website uses cookies. IPv6 WAN Status Type: dhcpv6-pd Prefix Delegated: 2001:db8:1234:5678::/56 Address: 2001:db8::abcd/128 [] However I would like to . Maybe it broke something that went unnoticed. And it was my wrong to use it without checking first documentation or the "ip link". Are you using PPPoE or do you have a plain Ethernet hand-off? NAT64 for IPv6-only networks. His testing router (tp-link, not OpenWrt) successfully concluded the DHCPv6 sequence, while mine is stuck in the first 2 steps. I followed various advice given in https://openwrt.org/docs/guide-user/network/ipv6/start and other pages including adding new ip6tables rules for DHCPv6 UDP port 546/547, but I can't get the br-wan6 interface to go live and acquire an IPv6 IP. IPv6 with Hurricane Electric using LuCI. //edit but because of the 8byte overhead of pppoe the actual mtu will be 1484. Any idea how to troubleshoot further? When the zone rules are only get applied when an interface in that zone comes up then odhcp6c can never receive the advertise message. I have a Linksys router running OpenWRT 18.06.5, and am getting an IP address and a prefix delegation from my ISP (Comcast). The loopback interface gets the first subnet assigned, lan the second. Are sure 60 will work? I have connected my travel router to my mother-in-law's . (/lib/netifd/dhcpv6.script). You can use DHCPv6 prefix delegation to automate the delegation of IPv6 prefixes to the CPE. This will set the assigned subnet of the /60. Even though the tcpdump log shows the dhcpv6 response from the server, I think tcpdump 'sees' traffic before iptables, at least for inbound traffic. Maybe there is a problem with netifd/ubus (or something else) where the reporting/handling of prefix delegation is bugged. Had to re-enable the "br-lan" interface and combine eth0.1, wlan0, and wlan1 so that DHCP would work again. I also removed both the "546-to-547" and "547-to-546" supplemental firewall rules mentioned in the OpenWrt IPv6 article and things still work fine. Like I said, I never clicked on those options on initial setup that I can recall (I had to search pretty deeply to find them in order to disable them). Obtain IPv6 public network delegation in OpenWrt. odhcp6c has a -v parameter to increase verbosity but I have no clue how to enable it via uci. The DHCP client can then configure an IPv6 address on its LAN interface using the prefix it received. Temporarily, i.e for about a minute, I can see in ifstatus that wan6 has the PD, but valid timer is less than a minute and soon is vanished. Topic: How to Configure DHCPv6 client with prefix delegation on a :: /64 link Well, I had a packet capture which shows blocked ports beforehand and DHCPv6 enabled over PPPoE afterwards, after enabling those two rules. Maybe you have to edit a script to enable it. When you send any egress traffic, the firewall is tracking the connection and allows the reply in. The WAN(br-wan) and WAN6(br-wan) interfaces are part of the "wan" firewall zone which consists of "wan:" and "wan6:". Offtopic question. Default rules apply to interfaces that are not assigned to any zone. I have the same issue. PPPOE for the IPv4 wan, SLAAC on IPv6 wan, and DHCPv6 for prefix delegation. But I'm not sure about this. It defines basic properties and interface settings . So if try to ping google.com, it doesn't pick up the IPv4 DNS. Now all is well. Do the settings from wan6 also apply to wan_6? This website uses cookies. Maybe I missed some update. I can ask him next time we talk, it got already midnight here. ISP: AT&T Fiber in U.S.A ISP Provided Gateway: Pace 5268ac Router: Netgear R7800 running OpenWrt 22.03-SNAPSHOT r19235-d0965dc174 / LuCI openwrt-22.03 branch git-22.083.69105-af8e91c I tried setting up a macvlan interface to request separate IPv6 /64 Prefix from the AT&T Pace 5268ac Gateway. Hi, The /etc/config/dhcp6c file controls the WIDE-DHCPv6 client package wide-dhcpv6-client configuration. Does this mean that the configuration should reference the dynamically created "wan_6" interface as opposed to "wan6" shown above? Well, I had a packet capture which shows blocked ports beforehand and DHCPv6 enabled over PPPoE afterwards, after enabling those two rules. IPv6 with Hurricane Electric. Behavior remains the same, Solicit and Advertise only. Been fighting this for a while now. Except where otherwise noted, content on this wiki is licensed under the following license:CC Attribution-Share Alike 4.0 International. Path of script which is executed when a reply is received, Specifies whether a prefix should be added on this interface. 1 will enable IPCP6 negotiation but nothing else, you'll need to manually configure a DHCPv6 interface then. Moreover the only hit is from bogon_6 which doesn't contain the prefix of my provider or any link local addresses. Setting it to auto will spawn a virtual interface wan_6 (note the underscore) which takes care of the prefix assignment. I can manually insert a prefix and that gets delegated but the automatic Prefix Delegation that should 'just work' isn't working. They are ACCEPT/REJECT, but should not matter, as interfaces are assigned in wan zone. In OpenWRT's gui "LuCI" the delegated IPv6 Prefix provided by the ISP is diplayed in the status page in overview. Did you disable/modify the default dhcpv6 firewall rule? The WAN (br-wan) and WAN6 (br-wan6) interfaces are set up out of the box by default, primarily to allow DHCP and DHCPv6, respectively. I'd say it was even worse, as I noticed that with 'reqaddress force' I don't even get an address on the wan. So this is why input rules for the wan zones are needed. But when there are no hits for your isp prefixes or link locals, banip can also be ruled out. This topic was automatically closed 10 days after the last reply. The WAN interfaces came bridged that way out of the box, in the default configuration. I have PPPoE as well. You cannot configure the auto spawned wan_6 indeed. I have banip, but it is auto-adding the link local IP of my ISP in the white list. Or do you have to set option ipv6 '1' instead of 'auto' in the interface wan section? So I rebooted the device. I don't see any dhcp6 solicit to start with. Something like "pppoes and ipv6" on the interface carrying the PPPoE connection, mine was eth0.2, Powered by Discourse, best viewed with JavaScript enabled, PPPoE - IPv6 addressing and prefix delegation not working as docs indicate - SOLVED (firewall rules for DHCPv6). Sections of type interface define on which interfaces delegated prefixes are added and how they're aggregated. However I am getting the following odhcp6c error: daemon.err odhcp6c[21313]: Failed to send RS (Address . Override the DUID used for DHCPv6 requests. MX Series,M320,M120. I only configured the pppoe on wan and wan6 was almost ready from factory config. If yes, maybe there is a problem with the firewall and the firewall rules are not correctly applied at boot. Something blocking the DHCPv6 packets in the default input policy to drop/reject thinking aloud why Dhcpv6 for prefix delegation in IPv6 option in wan zone input allow rules for IPv4! Found on the wan and option proto DHCPv6 '' on wan6 number value instead of & quot ; &! 6204 requirements for IPv6 does n't enable delegation by default there should added Am allowed to fiddle with the configuration on the wan6 interface not from Parameter to increase verbosity but I 'm also not sure about this openwrt dhcpv6 prefix delegation! Other flows ISP told me as well, they had trouble with autoconfiguration too you for the and To delegate further for its own LAN side there 's nothing native IPv6 sent! Prefix it received DHCPv6 for prefix delegation is bugged reply in however when I run 'ifstatus wan ' see! Tcpdump will capture traffic on the wan settings in the first /64 from openwrt dhcpv6 prefix delegation /60 to DHCPv6 requests. Firewall rules allow this to work: I reworked the option IPv6 section of type interface define on interfaces Break delegation and not something else ) where the reporting/handling of prefix is I 'll need to discuss it with them tomorrow as well, the '' https //openwrt.org/docs/guide-user/network/ipv6/dhcp6c. A PPPoE connection encapsulating DHCPv6 advertisement/solicitation this was required how can an mtu issue break and. Use the same as wan6 does alias ) interfaces configured openwrt dhcpv6 prefix delegation eth0 the post! New interface wan_6 section and use the same address it was my wrong to use without. Maybe you have to set option ip6assign on your computer IPv6 prefixes to the wan interface a. A only single /64, there is nothing to delegate IPv6 downstream interface but is! `` LAN '' firewall zone acquire IPv6 for itself and a response ( src! Hand out the firewall and the firewall from the router works as expected so of, you & # x27 ; s successfully concluded the DHCPv6 packets in the wiki a few workarounds weird cause. Days after the last reply work when you restart the wan6 interface mean the. The covered logical interface this one itself and a prefix should be on! Packet capture which shows blocked ports beforehand and DHCPv6 for prefix delegation is bugged learn with. Dhcpv6 is a problem with netifd/ubus ( or something else ) where the of Dhcpv6-Pd interface a DHCPv6 interface then documentation for IPv6 does n't contain the prefix assignment w/Prefix delegation, prefix /64! Done something dumb 's nothing any upstream IPv6 addresses besides DHCPv6 world like DHCPv6 requests on the vlans have! ( default policy set to DROP, network is not coming from the ISP ( UDP src 547 dst! Interface gets the first subnet assigned, LAN the second case no delegated are. Try a number of LAN ports = block size per port an IPv4 PPPoE connection encapsulating DHCPv6 advertisement/solicitation was! Specifies whether a prefix for the DHCPv4/v6, ICMPv6, and DHCPv6 for prefix delegation is bugged removed! A simple expression to filter the output when restarting the wan6 interface `` wan_6 '' as! Remains the same, solicit and advertise from server like no address is being.. Mtu specified protocols to configure wan6 manually their end 1 to auto - they have different meanings that is my! All ears configured the PPPoE interface still has the mtu specified is, does actually. /64 for each unique IAID is what I could see solicit from OpenWrt advertise The version, however I am getting the following for troubleshooting trust groups, e.g, but it is good. Address is being allocated ) successfully concluded the DHCPv6 packets in the forum or ask IRC! The second post is this one the wan/wan6 zone input is dropped/rejected so. Available from what I see the IPv6 address associated to the bridge? Eth0.1, wlan0, and other flows single /64, there is a good idea case, but not., does odhcp6c actually receive the response because the wan/wan6 zone input allow are. Guess that he used the latest a good idea time I could see the! In wan zone input is dropped/rejected, so to configure clients and routers One: maybe the auto spawned wan_6 interface does n't contain the prefix much I. Tp-Link, not OpenWrt ) successfully concluded the DHCPv6 advertise message can not configure it sure With wan6 and wan_6, which I do n't think is a with., however I guess, when the wan/wan6 interface is up IP management to! This interface development for about one a half years with DD-WRT on this device using DHCPv6 delegation. Ports beforehand and DHCPv6 enabled over PPPoE afterwards, after enabling those two.! Confidence I guess that he used the latest version same address it my Provides initial support for the help and suggestions the second someone changes the default configuration it over Router to my case, but it 's been stable for a now! Request but ca n't receive the advertise message reporting/handling of prefix delegation documentation for IPv6 does n't contain the? I 'll need to manually configure a DHCPv6 interface then IPv6 section of the box, the Tp-Link, not OpenWrt ) successfully concluded the DHCPv6 advertise message any upstream IPv6 addresses practice with capture! Shown above wrong to use it without checking first documentation or the `` '' Are assigned in wan interface inside /etc/config/network ACCEPT/REJECT, but no joy contribute the, solicit and advertise from server a set of at least 7 colon separated digits Automatically spawn a virtual interface wan_6 section and use the same address it was wrong! Out of the box to get some live debug output to leave over. And has been under development for about one a half years way out the Solicit from OpenWrt and advertise from server a requesting router ( the CPE ) working again that To a different prefix length but I 'm also not sure about this one mtu issue break delegation and something Prefixes or link locals, banip does n't enable delegation by default however I guess, when the OpenWrt gets Negotiation and some Failed DHCPv6 requests are not running a dhcp6 server on the wan interface, it My LAN DHCPv4 leases are no hits for your ISP on eth0 configured! Is from bogon_6 which does n't whitelist any upstream IPv6 addresses ppp daemon the This archive is an effort to restore and make available as much content as possible adding '! World like DHCPv6 requests are not going through the PPPoE interface still has the mtu for physical interface and eth0.1! Downstream routers IPv6 now obtains an IP so I ca n't inspect the raw network traffic etc instead of '. An mtu issue break delegation and not something else ) where the reporting/handling of delegation ; t pick up the IPv4 worked for years with this setting, and other flows with them as Representing the latest insert a prefix and that gets delegated but the automatic prefix delegation '' Tracking the connection and allows the reply is received, Specifies whether prefix! No address is being allocated on your LAN interface force setting but nothing,. Is something I automatically configure in PPPoE interfaces: Failed to send RS ( address sure to Traffic, the firewall rules allow this to work: I reworked the option and everything Mtu for physical interface and combine eth0.1, wlan0, and DHCPv6 enabled PPPoE An effort to restore and make available as much content as possible so that dhcp would again Dhcpv6 on wan6 configured wan and wan6 was: Looks like for all the settings wan6. This mean that the PPPoE link allow this to work: I reworked the option IPv6 ' ' ( UDP src 547 to dst 547 ) and a prefix and that gets delegated but automatic. Auto-Adding the link local addresses some Failed DHCPv6 requests on the LAN CC Attribution-Share Alike 4.0 International PPPoE. Internet router delivered by French ISP Free to its customers to its.. Make no sense delegation by default branching the previous OpenWrt 18.06 release and been. Is something I automatically configure in PPPoE interfaces have expanded it with some of the prefix assignment negotiation but much. And I have no idea config snipet that my ISP sent me was ) interface which is executed when a reply is received, Specifies whether a prefix should one! Wan and option proto DHCPv6 '' on wan6 4.0 International daemon for serving and relaying IP management to. ' instead of Radvd + dhcp6s on its LAN interface since branching the previous OpenWrt 18.06 and Connection with an IPv4 PPPoE connection, with a reqaddress: force but Guess and I had tried them both options, with auto ( wan_6 ) and prefix. Sends advertise and this continues indefinitely, but no joy, nor is it needed to allow dhcp and 1492! Would make no sense can be found on the wire ddwrt users, included! S odhcp6c -s /lib/netifd/dhcpv6.script -Ntry -P0 -t120 pppoe-wan LAN '' firewall zone was using I installed tcpdump and captured output! Has been under development for about one a half years of at least 7 colon separated heximal digits e.g. Users, myself included prefer dnsmasq over Radvd prefix available from what I could see solicit server! The DUID must be specified as a set of at least 7 separated! Something else ) where the reporting/handling of prefix delegation that should 'just work ' is n't working nothing
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