I have a 0.11 nodes, all was fine until now, no restart is doing anything.
My client sends a Version Handshake but the ACK never comes. In RPC getpeerinfo take 1 or 2 minutes to process even if there is only one connected node.
I was 0.10 before and noticed the problem, so I updated to 0.11 but it makes no difference. I am kind of stuck now. My Testnet node, on the same machine works perfectly.
No special errors in the logs, the node seems to get synchronized.