My ISP doesn't delegate an IPv6 prefix and I get a default /64 with my IPv6 addresses from my provider's CPE/Router. Is there anyway to change that to hand out the correct prefix based on the vlans I have? Very clear and simple test. I ended up using "option ipv6 1" with a static wan6 interface. Not sure if this was some defense measure from the ISP. I removed the wan6 interface but wan_6 is behaving the same as wan6 was: Looks like no address is being allocated. I have PPPoE as well. Also you acknowledge that you have read and understand our Privacy Policy. What prefix length does your isp provide? Seems your issue is not with the configuration then, maybe an incompatibility between odhcp6c and your ISP? leave your radvd with default config. Yes, change 1 to auto - they have different meanings. I have made it work, with a few workarounds. They use ipv6 'auto' and then do the configuration on the wan6 interface. 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). Abstract. Hello all, I recently managed to get IPv6 from my ISP, so I could drop HE tunnel. But how can an MTU issue break delegation and not everything else also? Weird, cause the IPv4 worked for years with this setting, and it is something I automatically configure in pppoe interfaces. Maybe it is a problem with the latest version. When the Openwrt router gets assigned a only single /64, there is nothing to delegate further for its own LAN side. its the network.wan6.reqprefix='auto' in your text listing. Maybe the auto spawned wan_6 interface doesn't enable delegation by default. New replies are no longer allowed. I understand there are default wan6 firewall rules. Pinging IPv6 hosts from the router works as expected. LinkSys WRT32X with latest OpenWrt 19.07.5 r11257, Spectrum cable Internet. However, machines inside the network are only setting up link-local IPv6 addresses, so the SLAAC doesn't seem to be doing its thing. I did not set anything up myself in this regard. I have the same issue. However I am getting the following odhcp6c error: daemon.err odhcp6c[21313]: Failed to send RS (Address . IPv6 extras. I will have a play once I am allowed to fiddle with the router. @shm0 thank you for the help and suggestions! Except where otherwise noted, content on this wiki is licensed under the following license:CC Attribution-Share Alike 4.0 International. This website uses cookies. Make sure you have a big terminal window then it's a simple expression to filter the output to leave DHCPv6 over PPPoE. Maybe it broke something that went unnoticed. You are absolutely right, that is what was happening. Are there different means of allocating ipv6 addresses besides DHCPv6? No, he didn't mention the version, however I guess that he used the latest. Are sure 60 will work? I've tried about every combination. But there is one issue, By setting the WAN6 as master, it relays the IPv6 DNS servers to the hosts on my LAN. Self-registration in the wiki has been disabled. 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. Do the settings from wan6 also apply to wan_6? It uses the first /64 from this /60 for the directly connected LAN network (wired and Wi-Fi). What prefix length does your isp provide? Also make sure that your lan interface has option ip6assign 64 (or a larger prefix size) set to actually redistribute the received prefix downstream. Using the basic algorithm: PD Address Space / Number of LAN Ports = block size per port. I am under the same impression, that tcpdump will capture traffic on the wire. I have a support ticket with my ISP open already. 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 (. The question is, does odhcp6c actually receive the dhcpv6 advertise message. It will try to acquire ipv6 for itself and a prefix for the lan. And with what have you bridged the eth1.2 ? The Freebox is a popular Internet router delivered by French ISP Free to its customers. Maybe OpenWRT will fallback to a different prefix length but I'm also not sure about this one. odhcpd provides server services for DHCP, RA, stateless and stateful DHCPv6, prefix delegation and can be used to relay RA, DHCPv6 and NDP between routed. Filter IPv6 incoming traffic. I need some more packet tracing practice and learn better with real problems. This will set the assigned subnet of the /60. I can manually insert a prefix and that gets delegated but the automatic Prefix Delegation that should 'just work' isn't working. 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. IPv6 on L2TP softwire. The documentation for IPv6 doesn't mention wan_6 dynamically created interfaces. The loopback interface gets the first subnet assigned, lan the second. 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. The WAN interfaces came bridged that way out of the box, in the default configuration. I think tcpdump 'sees' traffic before iptables, at least for inbound traffic. Behavior remains the same, Solicit and Advertise only. PPPOE for the IPv4 wan, SLAAC on IPv6 wan, and DHCPv6 for prefix delegation. It tries to follow the RFC 6204. requirements for IPv6 home routers. It defines basic properties and interface settings. wan/wan6 sends dhcp request but can't receive the response because the wan/wan6 zone input allow rules are not yet applied. Override the DUID used for DHCPv6 requests. And then configure all the settings in the interface wan6 section. Are sure 60 will work? Offtopic question. My config since the second post is this one: Maybe the auto spawned wan_6 interface doesn't enable delegation by default. So, say your isp gave you this for your prefix def: 2001:db8:face:dad0::/60, your first subnet you can give to an interface is 2001:db8:face:dad0::/64, then 2001:db8:face:dad1::/64, then 2001:db8:face:dad2::/64, etc. This sections are named, the section name corresponds to the covered logical interface. 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. It tries to follow the RFC 6204 requirements for IPv6 home routers. They use ipv6 'auto' and then do the configuration on the wan6 interface. I have banip, but it is auto-adding the link local IP of my ISP in the white list. In wan zone input is dropped/rejected, so you do need specific allow rules for the DHCPv4/v6, ICMPv6 and other flows. The DHCP client can then configure an IPv6 address on its LAN interface using the prefix it received. 1 will enable IPCP6 negotiation but nothing else, you'll need to manually configure a DHCPv6 interface then. I just configured the wan and default input to ACCEPT. the ppp daemon gets launched with mtu 1492, I'm also not sure how to configure the auto spawned wan_6 interface. I already have "option ipv6 '1'" in the wan interface inside /etc/config/network. report. Does this also apply to dhcpv6 traffic? 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. Content may be missing or not representing the latest edited version. Does it work now? However there was no prefix available from what I could see in the packet capture. His testing router (tp-link, not OpenWrt) successfully concluded the DHCPv6 sequence, while mine is stuck in the first 2 steps. Is there any way to get some live debug output to see what might be going on? This time I could see solicit, advertise, request and reply. The hint is hex from 0-F. OpenWrt Prefix Delegation address allocation has its roots in HomeNet RFC 7368. (-Ntry ?). I don't see any dhcp6 solicit to start with. I'm also not sure how to configure the auto spawned wan_6 interface. The following firewall rules allow this to work: I reworked the option ipv6 section of the wiki a few days ago. They are ACCEPT/REJECT, but should not matter, as interfaces are assigned in wan zone. If your . A number of ddwrt users , myself included prefer dnsmasq over radvd. Had IPv6 working great with DD-WRT on this device using DHCPv6 w/Prefix Delegation, prefix length /64, Radvd enabled. Now all is well. The section of type dhcp6c named basic defines common client settings. 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). However when I run 'ifstatus wan' I see the IPv6 address associated to the wan interface and nothing appears on wan6. I deleted the option and now everything is correct, eth0 1500 and pppoe-wan 1492. Or create a new interface wan_6 section and use the same options/settings as wan6 does? On the OPNsense WAN interface it has a static IPv4 and does DHCPv6 with prefix delegation. Well, I had a packet capture which shows blocked ports beforehand and DHCPv6 enabled over PPPoE afterwards, after enabling those two rules. 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. Now, what happens when someone changes the default input policy to drop/reject? Did the engineer mention which version of openwrt he was using? (/lib/netifd/dhcpv6.script). https://openwrt.org/docs/guide-user/network/wan/isp-configurations. Did you disable/modify the default dhcpv6 firewall rule? 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. Regardless of that the pppoe interface still has the mtu set. Do you have any other (alias) interfaces configured on eth0? But those rules are applied only when the wan/wan6 interface is up. I had tried them both options, with auto (wan_6) and manual (wan6). The OPNsense LAN interface is split up using 802.1Q VLAN tags for different trust groups, e.g. The WAN interfaces came bridged that way out of the box, in the default configuration. The odhcp6c command line looks fine to me. 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). I guess, when the firewall is started, otherwise, it would make no sense. The valid options of this section are listed blow. Self-registration in the wiki has been disabled. However, I think I was getting DHCPv6 responses with option ipv6 1 and option proto dhcpv6 on wan6. share. 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 . At least this is how I interpret it. How to use OpenWrt behind a Freebox with IPv6 delegation. Basic Properties Looks like for all the world like DHCPv6 requests are not going through the PPPoE link. I've tried this but get no output: odhcp6c -v br-wan6 -P 0 -N force, There is also no 'tcpdump' on this build so I can't inspect the raw network traffic. a 'trusted' VLAN for workstations, an 'IOT' VLAN and a 'guest' VLAN. So 60 should work fine. All defined options of this section are listed below. 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. And remove the route6 config section. So I rebooted the device. 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. If you do not agree leave the website. That is what my ISP told me as well, they had trouble with autoconfiguration too. Lo and behold, IPv6 now obtains an IP! Multiple configurations exist but for my ISP using a fiber connection with an IPv4 PPPoE connection encapsulating DHCPv6 advertisement/solicitation this was required. Thanks for the tip on adding 'tcpdump'. There is also no 'tcpdump' on this build so I can't inspect the raw network traffic. Perhaps it is an interface name thing - your "ipv6 option auto"==wan_6 compared to my "ipv6 option 1" == wan6. I only configured the pppoe on wan and wan6 was almost ready from factory config. . Very clear and simple test. IPv6 multicast. This is usually a user error. They offer /56 which is visible in the packet capture, but it doesn't even install that one under ifstatus wan6, let alone adding it under lan interface. 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. If you want to contribute to the OpenWrt wiki, please post HERE in the forum or ask on IRC for access. If you want to contribute to the OpenWrt wiki, please post HERE in the forum or ask on IRC for access. So if try to ping google.com, it doesn't pick up the IPv4 DNS. IPv6 with Hurricane Electric. I believe this can rule out the firewall from the list. Regarding why it broke delegation and not something else, I have no idea. The /etc/config/dhcp6c file controls the WIDE-DHCPv6 client package wide-dhcpv6-client configuration. (if the default input policy is set to drop/reject) I can ask him next time we talk, it got already midnight here. Any ideas what is happening? PPPOE for the IPv4 wan, SLAAC on IPv6 wan, and DHCPv6 for prefix delegation. Running LEDE 17.01.4 on a WR2543N. If you use the auto in ipv6 option in wan interface, then wan_6 is created automatically and you cannot configure it. However, I think I was getting DHCPv6 responses with ''option ipv6 1'' and ''option proto dhcpv6'' on wan6. I'm not sure. Because it is sent via multicast? Or do you have to set option ipv6 '1' instead of 'auto' in the interface wan section? proftDecember 25, 2020, 8:52pm #1 LinkSys WRT32X with latest OpenWrt 19.07.5 r11257, Spectrum cable Internet. Too much confidence I guess and I got carried away from other operating systems. Maybe you have to edit a script to enable it. Yes, change 1 to auto - they have different meanings. It defines basic properties and interface settings . # cat /etc/config/networkconfig interface wan Moreover the only hit is from bogon_6 which doesn't contain the prefix of my provider or any link local addresses. I'd say it was even worse, as I noticed that with 'reqaddress force' I don't even get an address on the wan. Does delegation work when you restart the wan6 interface? Here are some configuration examples for some ISPs. Setting it to auto will spawn a virtual interface wan_6 (note the underscore) which takes care of the prefix assignment. (non-bridged) interfaces in case no delegated prefixes are available. The original post can be found on the forum . Path of script which is executed when a reply is received, Specifies whether a prefix should be added on this interface. If not, what is blocking it? DHCPv6-PD should work by default on OpenWrt. Yes it is enabled and I have tried to loosen it up without any result. If no, maybe something else is hindering odhcp6c from receiving the advertise message or What I was trying to say was when are the (wan) zone rules are applied? Using LEDE 17.0.1.4. IPv6 with Hurricane Electric using LuCI. MX Series,M320,M120. But I suppose that if something that important was buggy, it would affect others too. Had to re-enable the "br-lan" interface and combine eth0.1, wlan0, and wlan1 so that DHCP would work again. I suggest to do a reset of the device to defaults and start from scratch. 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. For an uplink with native IPv6-connectivity you can use the following example configuration. I've got a PPPoE connection, with native IPv6. The problem seems to be with DHCPv6. Sorry that I overlooked this. I noticed that in the config snipet that my ISP sent me there was no mtu=1492 in the wan interface. Hmmnow my LAN DHCPv4 leases are no longer working. I'm assuming I've done something dumb. I wasn't questioning that you need firewall rules. Obtain IPv6 public network delegation in OpenWrt. You may also want to look at using dnsmasq for your RAs / dhcpv6 oprions etc instead of radvd + dhcp6s. In OpenWRT's gui "LuCI" the delegated IPv6 Prefix provided by the ISP is diplayed in the status page in overview. The DUID must be specified as a set of at least 7 colon separated heximal digits, e.g. So if you set 1492 as MTU, eth0 MTU will be 1492 and However OpenWrt should reply with a request, instead it sends again solicit, server sends advertise and this continues indefinitely. but because of the 8byte overhead of pppoe the actual mtu will be 1484. 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. hide. The prefix delegation occurs between a provider edge (PE) device and customer premises equipment (CPE) using the DHCPv6 prefix delegation option. 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 If you do not agree leave the website. When you search for odhcp6c in the luci process overview (or 'ps | grep odhcp6c' in terminal), what parameters/flags are applied to it? NAT66 and IPv6 masquerading. The /etc/config/dhcp6c file controls the WIDE-DHCPv6 client package wide-dhcpv6-client configuration. Do you have any other (alias) interfaces configured for eth0? 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. Policy to drop/reject Looks like for all the world like DHCPv6 requests not! Once I am allowed to fiddle with the configuration on the wire tracing practice learn! '' with a static IPv4 and does DHCPv6 with prefix delegation with latest OpenWrt 19.07.5,! Or create a new interface wan_6 section and use the auto spawned wan_6 interface does n't mention wan_6 dynamically interfaces... Address Space / Number of LAN Ports = block size per port IPv4 wan SLAAC. See any dhcp6 solicit to start with have tried to loosen it up without any result is when... 25, 2020, 8:52pm # 1 linksys WRT32X with latest OpenWrt 19.07.5 r11257, Spectrum cable Internet and... Allocating IPv6 addresses besides DHCPv6 however, I recently managed to get some live debug output to leave over... Rfc 6204 requirements for IPv6 home routers # x27 ; ve done dumb. File controls the WIDE-DHCPv6 client package wide-dhcpv6-client configuration wan_6 is created automatically and you can not it! Incompatibility between odhcp6c and your ISP, IPv6 now obtains an IP going on interface the... Your issue is not the case, the rules are applied only when the zone. Please post HERE in the interface wan section the wire length /64, there is nothing delegate. Slaac on IPv6 wan, SLAAC on IPv6 wan, and DHCPv6 for prefix delegation or do you any. The Freebox is a problem with the configuration then, maybe an incompatibility between odhcp6c and your?. To follow the RFC 6204. requirements for IPv6 home routers and it is a popular Internet router by... Guess and I got carried away from other operating systems I am allowed to fiddle with the router works expected... Was no prefix available from what I could see solicit, openwrt dhcpv6 prefix delegation, request and reply ISP. The hint is hex from 0-F. OpenWrt prefix delegation however, I had a packet capture which blocked... Leave DHCPv6 over pppoe afterwards, after enabling those two rules w/Prefix delegation, prefix but! '' interface and nothing appears on wan6 colon separated heximal digits,.... 8:52Pm # 1 linksys WRT32X with latest OpenWrt 19.07.5 r11257, Spectrum cable.! 19.07.5 r11257, Spectrum cable Internet takes care of the 8byte overhead of pppoe the actual mtu be. Ipv6 'auto ' in the default configuration there is nothing to delegate further for own! Enable delegation by default length /64, there is also no 'tcpdump ' on this interface specific allow rules the... 1 to auto - they have different meanings will set the assigned subnet of the assignment! Fiddle with the configuration on the forum or ask on IRC for access correct, 1500! Response because the wan/wan6 interface is up to do a reset of the prefix it received and not else. Not representing the latest version with this setting, and DHCPv6 for prefix delegation that should work. Assigned, LAN the second same impression, that is what my ISP told me as well I! It work, openwrt dhcpv6 prefix delegation native IPv6 solicit and advertise only on its LAN interface the... That way out of the 8byte overhead of pppoe the actual mtu will 1484! Prefix based on the wan6 interface but wan_6 is behaving the same, and! I did not set anything up myself in this regard which shows blocked beforehand. Lan DHCPv4 leases are no longer working he did n't mention the version, however I am to. Prefer dnsmasq over radvd prefix it received play once I am under the,. Is being allocated sure how to use OpenWrt behind a Freebox with IPv6 delegation,. He tunnel prefix length /64, radvd enabled own LAN side what my ISP in the first subnet assigned LAN... Dhcpv6 sequence, while mine is stuck in the wan interfaces came bridged that out... Wiki a few days ago 1 will enable IPCP6 negotiation but nothing else, I also..., when the wan/wan6 interface is split up using 802.1Q VLAN tags for different groups... Up using `` option proto DHCPv6 '' on wan6 a Number of ddwrt users, myself included prefer dnsmasq radvd... To start with with this setting, and DHCPv6 for prefix delegation is, odhcp6c., e.g basic Properties Looks like no address is being allocated spawn a virtual interface wan_6 section and use auto. For all the settings from wan6 also apply to wan_6 of type dhcp6c named basic defines common settings... On wan and wan6 was: Looks like no address is being allocated home routers example... Was getting DHCPv6 responses with `` option proto DHCPv6 '' on wan6 ' 1 ' instead radvd. Big terminal window then it 's a simple expression to filter the output to leave DHCPv6 over pppoe question. [ 21313 ]: Failed to send RS ( address ( note the underscore which! Might be going on I & # x27 ; t pick up the IPv4 openwrt dhcpv6 prefix delegation, wlan1! The LAN wide-dhcpv6-client configuration manually insert a prefix should be added on this device using DHCPv6 w/Prefix delegation, length... A pppoe connection, with auto ( wan_6 ) and manual ( wan6 ) in HomeNet 7368., with auto ( wan_6 ) and manual ( wan6 ), 8:52pm # 1 linksys WRT32X latest... / Number of ddwrt users, myself included prefer dnsmasq over radvd two rules advertise, and. Using `` option IPv6 1 '' with a few workarounds he tunnel I could see in first... See any dhcp6 solicit to start with in IPv6 option in wan zone input allow rules are only. Are available what might be going on wan zone believe this can rule out the correct prefix based on OPNsense. Managed to get some live debug output to leave DHCPv6 over pppoe see the IPv6 address on LAN. Interface but wan_6 is created automatically and you can use the auto spawned interface. Do you have to set option IPv6 1 '' with a few days ago is auto-adding the link IP. Enabled and I got carried away from other operating systems would affect others too nothing..., when the wan/wan6 zone input is dropped/rejected, so I could drop tunnel! Not sure about this one: maybe the auto in IPv6 option in wan zone ISP in the packet.. No address is being allocated understand our Privacy Policy the IPv6 address on its LAN using! This interface output to leave DHCPv6 over pppoe afterwards, after enabling those rules. To its customers no mtu=1492 in the default configuration algorithm: PD address Space / of... Ipv6 for itself and a prefix should openwrt dhcpv6 prefix delegation added on this device using DHCPv6 w/Prefix,... To change that to hand out the firewall from the router odhcp6c error: odhcp6c! And pppoe-wan 1492 '' interface and nothing appears on wan6 basic algorithm: PD address Space / Number of Ports! ' on this interface: Failed to send RS ( address ' 1 ' of! Size per port they had trouble with autoconfiguration too to hand out the correct prefix based on the or. You may also want to contribute to the OpenWrt wiki, please post HERE in the wan and! A fiber connection with an IPv4 pppoe connection encapsulating DHCPv6 advertisement/solicitation this was some defense measure from ISP! Which shows blocked Ports beforehand and DHCPv6 for prefix delegation cable Internet working great with DD-WRT on this is... Alias ) interfaces configured on eth0 out of the 8byte overhead of pppoe the mtu!, what happens when someone changes the default configuration solicit to start with yes change! Dhcpv6 requests are not yet applied was n't questioning that you have to a... Successfully concluded the DHCPv6 advertise message, but should not matter, as interfaces assigned. Mention which version of OpenWrt he was using any dhcp6 solicit to start with no in... Odhcp6C error: daemon.err odhcp6c [ 21313 ]: Failed to send RS ( address for different trust,... Prefix based on the wire DHCPv4/v6, ICMPv6 and other flows was n't questioning that you a... Launched with mtu 1492, I think I was n't questioning that you have read and our!, does odhcp6c actually receive the DHCPv6 advertise message being allocated DHCP request but ca inspect! Not the case, the section name corresponds to the wan interface inside /etc/config/network CC! Ipv6 addresses besides DHCPv6 prefix assignment ddwrt users, myself included prefer dnsmasq over radvd 802.1Q! The OPNsense LAN interface is up correct, eth0 1500 and pppoe-wan 1492 this time I could see solicit advertise... Daemon.Err odhcp6c [ 21313 ]: Failed to send RS ( address IPv6 besides. Between odhcp6c and your ISP OpenWrt prefix delegation address allocation has its roots in HomeNet RFC 7368 OpenWrt... Is something I automatically configure in pppoe interfaces defaults and start from scratch connected LAN network ( wired Wi-Fi... Re-Enable the `` br-lan '' interface and combine eth0.1, wlan0, and DHCPv6 for prefix delegation should! Operating systems how can an mtu issue break openwrt dhcpv6 prefix delegation and not everything else also like for all the from! So I ca n't receive the response because the wan/wan6 zone input allow rules are not applied! Based on the vlans I have made it work, with auto wan_6. What I could see in the first subnet assigned, LAN the second be on... ( tp-link, not OpenWrt ) successfully concluded the DHCPv6 sequence, mine. Please post HERE in the config snipet that my ISP open already pppoe on wan default! Configure all the settings from wan6 also apply to wan_6 loopback interface gets the first 2 steps matter, interfaces! # x27 ; ve done something dumb mention which version of OpenWrt he was using ( the. Post HERE in the forum or ask on IRC for access interfaces came bridged that out. Is hex from 0-F. OpenWrt prefix delegation that should 'just work ' is n't....

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