Proxmox v7, IPV6 Online.net

[pblou]

Hello there,

I'm using pve-manager/7.4-3/9002ab8a (running kernel: 5.15.102-1-pve) and IPV4. My provider is ONLINE.NET (Dedibox)
I'm configuring IPv6 and it work fine on the host.

I have a VM with a Mikrotik Software OS.
In IPv6, the host communicate with Internet and VM Mikrotik, the VM Mikrotik communicate with host, but not with Internet.

The forwarding and accept_ra is configred like this:

net.ipv6.conf.all.forwarding=1
net.ipv6.conf.vmbr0.accept_ra=2

(vmbr0 is Wan, vmbr1 is LAN)

Route -6 is:
Kernel IPv6 routing table
Destination Next Hop Flag Met Ref Use If
ip6-localhost/128 [::] U 256 2 0 lo
2001:bc8:xxxx:100::/56 [::] U 256 13 0 vmbr0
2001:bc8:6005:15::/64 [::] UAe 256 1 0 vmbr0
fe80::/64 [::] U 256 1 0 eno2
fe80::/64 [::] U 256 1 0 vmbr1
fe80::/64 [::] U 256 1 0 vmbr0
[::]/0 fe80::2616:9dff:fe9c:c521 UGDAe 1024 13 0 vmbr0
ip6-localhost/128 [::] Un 0 10 0 lo
2001:bc8:xxxx:100::/128 [::] Un 0 3 0 vmbr0
2001:bc8:xxxx:100::1/128 [::] Un 0 12 0 vmbr0
2001:bc8:6005:15::/128 [::] Un 0 3 0 vmbr0
2001:bc8:6005:15:ae1f:6bff:fe90:d036/128 [::] Un 0 9 0 vmbr0
fe80::/128 [::] Un 0 3 0 eno2
fe80::/128 [::] Un 0 3 0 vmbr1
fe80::/128 [::] Un 0 3 0 vmbr0
fe80::ae1f:6bff:fe90:d036/128 [::] Un 0 10 0 vmbr0
fe80::ae1f:6bff:fe90:d037/128 [::] Un 0 4 0 eno2
fe80::ae1f:6bff:fe90:d037/128 [::] Un 0 2 0 vmbr1
ip6-mcastprefix/8 [::] U 256 2 0 eno2
ip6-mcastprefix/8 [::] U 256 9 0 vmbr1
ip6-mcastprefix/8 [::] U 256 11 0 vmbr0
[::]/0 [::] !n -1 1 0 lo

anybody can help me ?

Thks

 

[pwozniak]

Hi,

Same issue for me with pve 7.4-3

With IPv6 :
Host can access Internet and Internet can access the Host
VM can't access Internet and Internet can access the VM

I'm discussing with assistance but no advice works...

 

[encryptedserver]

This is my interfaces file and Host and VM can access IPv6 Internet, change it to static if you want since I use DHCPv6

auto lo
iface lo inet loopback

iface enx0 inet manual

auto vmbr0
iface vmbr0 inet dhcp
    gateway 10.88.88.1
    bridge-ports enx0
    bridge-stp off
    bridge-fd 0

iface vmbr0 inet6 dhcp
    gateway fd88::1
    bridge-ports enx0
    bridge-stp off
    bridge-fd 0