Proxmox host can't ping docker container on VM

I’ve the current configuration

From Proxmox host

can ping debian vm

cant ping docker container

add static route

ip route add via

traceroute to (, 30 hops max, 60 byte packets

1 ( 0.300 ms 0.217 ms 0.203 m

The route is correct, but then it’s dropped for some reason.

From Debian VM

can ping Proxmox host

can ping docker container

On the Debian VM there is no firewall installed. What can i investigate further because i have no clue at this point.

Can you give us some more info about your network setup? I’m honestly surprised that Proxmox can ping the Debian VM (it’s not in PVE’s subnet). I’d love to know what the Proxmox and Debian routing tables look like and also see the /etc/network/interfaces file from each. Is there a router between the host and the VM?