My machine crashed (would not start) and so I pulled my harddrives and memory (which was not stock) and brought to another identical Dell optiplex 755 which I found in the office. Now everything seems to work fine except for sporadic network behavior when connecting through ssh either to or from the new machine. After around a minute or so I get a broken pipe. If I run with strace all I get is "reset by peer".
Now, although I am completely new to debugging tcp issues, with the help of this post my thinking is that it could have something to do with dropped tcp packets. When I run
> netstat -s -p
I find that the "segments retransmitted" counter increased with 4 at the point where I got the broken pipe.
Before finding the above post I did the below tests suspecting it had something to do with the changed hardware itself: 1. ethtool eth0 (shows nothing weird, have full duplex) 2. ethtool -t eth0 (PASS) 3. dig (says NOERROR)
Any suggestions on what the problem could be and how/if I might be able to fix it?