I want to be sure the torrent traffic of my transmission docker instance go through my VPN.

I got different interfaces with different vlans on the host. I want to be sure the container created with docker compose use only a specific interface. The interface with the correct vlan has IP 192.168.90.92

I have tested the host connectivity with: curl --interface ethX https://api.ipify.org/ and it's working fine, meaning that public ips are different.

I have tried with the following on the docker compose file:

ports:
- 9091:9091 # Web UI port
- 192.168.90.92:51413:51413 # Torrent port (TCP)
- 192.168.90.92:51413:51413/udp # Torrent port (UDP)

However, the traffic is still coming from the default gateway.

Any idea?

Thanks!