IPv6 problems (maybe from proxmox!)

[m-electronics]

Now I have another problem but similar to that here: Now I can reach the pfSense with the prefix:: but now the VyOS does not answer to neighbor solicitation messages. It has joined the correct multicast groups for its addresses. (solicited node multicast) but doesn´t answer to the NS messages. (But also sometimes it is answering? "exploding-head-emoji") And I think there must be some issue on the layer under that. On the bridge, multicast bridge routing?

 

[Ramalama]

Try to disable multicast snooping on the bridge. I need todo the same for example to get ospf properly working, ospf works without either but not reliable for me on opnsense for example.

auto vmbr0
iface vmbr0 inet static
        address 172.20.1.6/24
        gateway 172.20.1.1
        bridge-ports bond0
        bridge-stp off
        bridge-fd 0
        bridge-vlan-aware yes
        bridge-vids 2000 2002-2006 2010
        post-up ( echo 1 > /sys/devices/virtual/net/$IFACE/bridge/multicast_querier )
        post-up ( echo 0 > /sys/class/net/$IFACE/bridge/multicast_snooping )

Thats an example code to adopt the post-up commands to disable multicast snooping on the linux bridge.
you can test first with: (this is not permanent)
echo 1 > /sys/devices/virtual/net/vmbr0/bridge/multicast_querier
echo 0 > /sys/class/net/vmbr0/bridge/multicast_snooping

For defaults simply echo the reverse.