Weird problem here.
After a while (usually 10 hours of uptime) my server become unreachable, clients get "session no longer available" when connecting. Clients that where connected before are still playing seemlessly on the same server though.
If I restart the server It woks again (obviously), so this is not firewall-related.
I've got a second server (which runs on the same install folder with same config, except souremod folder which is an exact copy). This never happened on this second server.
Does anyone know where I can start to dig when it happens? I'm really stuck here :/
EDIT: It seems that this is an issue with server loosing connection with steam. After a lot of search, there seems to be no solutions to this but waiting for server to be empty an hibernating. I find it weird though, many servers don't seem to have any issue with lobby connections...