Just found this ticket after upgrading and wondering where the show interfaces pppoe pppoe0 log command had gone. I did find it useful to check why a PPPoE interface hadn't come up.

@jack9603301 Do you have a working RA on that interface? You can set service router-advert interface <if> prefix ::/64 for RA to advertise all prefixes on the interface. That way if the DHCPv6-PD prefix changes it will send advertisements for the new prefix automatically.

@Sonicbx @jjakob I also created https://phabricator.vyos.net/T2504 - I think we duplicated the issue here. You can close whichever issue you want.

@c-po At present, through DHCPv6 PD, IP can be obtained on the bridge, but cannot be distributed to the client through SLAAC. Is it my configuration error?

If this can be solved by a kernel update, there was talk about maybe having different build "flavors" in the past - one with all the hardware nic drivers, one without. The minimal image could then have the latest (5.x) kernel.
There's T2085 which prevents us from testing any newer kernel ourselves as it's built by Jenkinsfiles in the CI, we'd need to manually do the steps the CI does to build a kernel. I proposed a shared script solution for these repositories in that task that could be called from both the CI and vyos-build, this would allow anyone to build all packages, including the kernel, through vyos-build, just for cases like this.

In T2505#64889, @c-po wrote:

There is no newer kernel then 4.19.124 on the 4.19x train. Newer Kernels do not work as the out-of-tree Intel drivers for the NICs and QAT won‘t compile for Kernel >5.3 and that is bot an LTS one.

Cool, thanks for pointing this out; I will take T2501, and will probably rename for clarity.

There is no newer kernel then 4.19.124 on the 4.19x train. Newer Kernels do not work as the out-of-tree Intel drivers for the NICs and QAT won‘t compile for Kernel >5.3 and that is bot an LTS one.

Welcome - need to make a prefix-hint CLI node for the future

https://phabricator.vyos.net/T935 Here’s the same thing happening in the past. I think it was resolved by doing kernel updates? Can someone do a kernel update in the rolling build?

@jestabro thanks for that tip, vyos-config-debug helped me track down the failing code. At least I can continue working until T2501 is fixed.

@jjakob, yes I see the issue there; but firstly, did you try debugging with boot parameter 'vyos-config-debug' ? cf.

Yup, sorry. Just figured that out too after reading https://blog.kylemanna.com/ipv6/using-native-ipv6-via-comcast-in-san-francisco/.

@jjakob yes, thanks for pointing this out ...

No, its just an ID. Please read my comments above and inser the prefix ::/60 infinity; line and reboot

Appreciate it. Sorry, I had assumed VyOS was using dhclient, not DHCP6c.

You only receive a /64 prefix, try adjusting the template then change sla-len to 4

In T421#64836, @c-po wrote:

sla-len should be 12 in your case then.

If that does not work, it could be that you need to hint comcast you want to have a /60 PD, by addin prefix ::/60 infinity; here into line 26

https://github.com/vyos/vyos-1x/blob/current/data/templates/dhcp-client/ipv6.tmpl#L26

or on the router itself you find the file here: /usr/share/vyos/templates/dhcp-client/ipv6.tmpl

@jestabro I think T2501 is related to this - can you take a look?

sla-len should be 12 in your case then.

In T421#63911, @c-po wrote:

From the Git commit:

commit faa85accc99d6ff777f12f5dd9e43a6dd8f7e7a2 (origin/ipv6-pd)
Author: Christian Poessinger <[email protected]>
Date:   Sun May 17 20:15:45 2020 +0200

    pppoe: dhcpv6-pd: T421: initial support

    The following configuration will assign a /64 prefix out of a /56 delegation
    to eth0. The IPv6 address assigned to eth0 will be <prefix>::ffff/64.
    If you do not know the prefix size delegated to you, start with sla-len 0.

      pppoe pppoe0 {
          authentication {
              password vyos
              user vyos
          }
          description sadfas
          dhcpv6-options {
              delegate eth0 {
                  interface-id 65535
                  sla-id 0
                  sla-len 8
              }
          }
          ipv6 {
              address {
                  autoconf
              }
              enable
          }
          source-interface eth1
      }

      vyos@vyos:~$ show interfaces
      Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down
      Interface        IP Address                        S/L  Description
      ---------        ----------                        ---  -----------
      eth0             2001:db8:8003:400::ffff/64        u/u

This is a proof of concept. What is not working?

• IPv6 address is not removed from delegated interface
• router-advertisements? Not tested yet!

@c-po I suspect that the problem has been found, but after I executed the restart PPPoE command, the default travel was lost. My configuration name wrote the following static route:

interface-route 0.0.0.0/0 {

next-hop-interface pppoe0 {
}

}
interface-route6 ::/0 {

next-hop-interface pppoe0 {
}

}
table 150 {

interface-route 0.0.0.0/0 {
    next-hop-interface pppoe0 {
    }
}
interface-route6 ::/0 {
    next-hop-interface pppoe0 {
    }
}

}

But it disappeared after disconnect interface pppoe0.

Just thought I'd say that this implementation has worked for my DHCPv6-PD enabled ISP in Australia :)

https://github.com/vyos/vyos-1x/pull/422/files

low-brow caching:

A friend also thought about set service nettty for network tty (which it is infact)

Maybe set service serial-bridge?

Who can write a python handler?
XML is ready.

PR https://github.com/vyos/vyos-1x/pull/421

It causes this:

9140 ?        Ss     0:00 /bin/bash /usr/libexec/vyos/init/vyos-router start
 9427 ?        S      0:00  \_ /bin/bash /usr/libexec/vyos/init/vyos-router start
 9428 ?        S      0:00      \_ python3 /usr/libexec/vyos/vyos-boot-config-loader.py /opt/vyatta/etc/config/config.boot
 9451 ?        S      0:00          \_ /opt/vyatta/sbin/my_commit
 9522 ?        S      0:00              \_ sudo sh -c VYOS_TAGNODE_VALUE='eth0' /usr/libexec/vyos/conf_mode/interfaces-ethernet.py
 9523 ?        Sl     0:00                  \_ python3 /usr/libexec/vyos/conf_mode/interfaces-ethernet.py
 9531 ?        R      0:00                      \_ /bin/cli-shell-api --show-active-only --show-show-defaults --show-ignore-edit showConfig