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KS-LE: Get IPv6 to work under Proxmox

Timtimo13Timtimo13 Member
in Help

hey guys,

I bought a KS-LE at kimsufis black week offers and installed Proxmox on it using their offered Proxmox distribution but it is not coming with IPv6 connectivity and now I'm stuck getting it to work.

I added the following to my interfaces:
iface vmbr0 inet6 static
address 2001:41d0:****:****::1
netmask 128
post-up sleep 5; /sbin/ip -family inet6 route add 2001:41d0:****:ff:ff:ff:ff:ff dev vmbr0
post-up sleep 5; /sbin/ip -family inet6 route add default via 2001:41d0:****:ff:ff:ff:ff:ff
post-down /sbin/ip -family inet6 route del 2001:41d0:****:ff:ff:ff:ff:ff dev vmbr0
post-down /sbin/ip -family inet6 route del default via 2001:41d0:****:ff:ff:ff:ff:ff

As soon as I reboot the system IPv4 comes back to life but IPv6 does not. SSH is also not working anymore and I have to set it to rescue mode and remove the IPv6 configuration.

Do you have any idea, whats wrong with my config ?

Thanks

Comments

  • mrclownmrclown Member

    Netmask is /64 and your gw address is wrong too. I just added ipv6 address and gateway, working fine.

  • Timtimo13Timtimo13 Member

    I had a netmask of /64 configured but how is my gateway wrong ?

    are you ok with me dm you with my IPv6 address ? I don't really know whats wrong with it ?

  • Timtimo13Timtimo13 Member
    edited November 2021

    I changed the netmask back to /64 and I figured out, what you meant with 'gateway is wrong'.
    I guess I just messed up with replacing actual IP with stars. I did not fuck it up, it's the LETs post editor :neutral: It uses STAR STAR text STAR STAR to bold sth

    My gateway looks more like this:
    post-up /sbin/ip -family inet6 route add 2001:41d0:----:--ff:ff:ff:ff:ff dev vmbr0
    post-up /sbin/ip -family inet6 route add default via 2001:41d0:----:--ff:ff:ff:ff:ff
    post-down /sbin/ip -family inet6 route del 2001:41d0:----:--ff:ff:ff:ff:ff dev vmbr0
    post-down /sbin/ip -family inet6 route del default via 2001:41d0:----:--ff:ff:ff:ff:ff

    I can add the IPv6 to an extra VMBR now but I don't get any connectivity to the internet.
    Does anyone have an idea ?

  • mrclownmrclown Member

    DM me please

  • zephzeph Member

    I had the same issue.
    I solved it like this, I installed npd6 and configured it to my subnet.

    Then i used the following network config:

    iface eno3 inet6 static
    address 2001:41d0:700:xxxx::1/128
    gateway 2001:41d0:700:xxxx:ff:ff:ff:ff


auto vmbr0
iface vmbr0 inet static
    address xx.xx.xx.xx/29
    bridge-ports none
    bridge-stp off
    bridge-fd 0

iface vmbr0 inet6 static
    address 2001:41d0:700:xxxx::2/64
    up ip -6 route add 2001:41d0:700:xxxx::/64 dev vmbr0
        down ip -6 route del 2001:41d0:700:xxxx::/64 dev vmbr0

    And in my VM I used as 2001:41d0:700:xxxx:12:2/64 and as gateway 2001:41d0:700:xxxx::2

    The main drawback i'm still having: I need to periodically run a traceroute to keep the IPv6 connection running.
    Maybe somebody else can solve it.

  • v3ngv3ng Member, Host Rep

    Good luck with IPv6 on OVH's network.

    Their implementation is so broken and rarely works.

  • NeoonNeoon Community Contributor, Veteran

    https://wiki.x8e.net/doku.php?id=proxmox_ipv6

    Works, besides when they had a maintenance, the entire machine lost connectivity and I need to run a hard reset.

    Thanked by 1derekyang
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