Mode 'ethernet_vlan_tagged_packets_keep_tag_on_bridge' not working

[dmat93]

Hi, I was testing OpenSand using the CLI scripts under the configuration 'ethernet_vlan_tagged_packets_keep_tag_on_bridge' (I guess the same issue is valid also for all ethernet configuration).

➡️ I reproduced the configuration as in the figure (SAT, ST, GW, WS_ST, WS_GW). ➡️ I started the OpenSand entities in the right order. ➡️ I correctly configured the Makefile in the folders (using the MAC of the LAN interface of the GW in the WS_ST and the MAC of the LAN interface of the ST in the WS_GW).

✅ The ping between ST and GW is OK with the satellite delay. ❌ The ping between WS_ST and WS_GW is not going.

I don't see any packet from the WS_ST to the ST.

ℹ️ By removing the ARP configuration on the WS (disabling the ip neigh commands) I noted that the ARP request from WS_ST reaches the WS_GW but the ARP reply from the WS_GW is not forwarded back to the GW --> ST --> WS_ST.