Ever since I upgraded to 0.11.x I have started having this problem on my node:
[errors] => WARNING: check your network connection, 0 blocks received in the last 4 hours (24 expected)
The node is indeed behind in block count:
[version] => 110200
[protocolversion] => 70002
[walletversion] => 60000
[blocks] => 397697
[timeoffset] => -1
[connections] => 19
[proxy] =>
[difficulty] => 144116447847.35
[testnet] =>
[keypoololdest] => 1347181371
[keypoolsize] => 102
I restart the node, it catches up but then falls behind again about a day or two later. There is nothing wrong with my Internet connection, I have several other nodes of different altcoin running on the same connection and they do not have this problem.