Bitcoind lose the latest blocks when synchronize I've the latest version of Bitcoin-qt (bitcoin.org 0.15.1). My problem is I lose info about latest blocks with delay about 3-5 minutes. When my GUI or bitcoind started sometimes for a short time I get this warning in debug.log:


  2017-12-26 19:42:52 Timeout downloading block
  000000000000000000594fca8fc2e2e6f7baff5ac96a10d94f33ae3b0f4e1971 from
  peer=12, disconnecting


After that I lose latest new blocks for a while, and the easier way is restart bitcoind. 

Is it could be because of that my ports is not forwarding and I have only 8 connections? What means this warning, I can't google it?
My problem was I didn't configure nodes settings and use unhealthy default nodes. When I specified "addnode=closestnodesIP" my problem was solved.