Comment by jwr

Hey, I had this problem! Exactly the same symptoms, although I never got as far as dumping actual packet contents. But I did verify that packet loss (of various sizes) was not the culprit. It was SSH (and some monitoring TCP connections) that failed (hung), always precisely at the same moment.

I suspected the VM code at the time, but it is very likely that my packets had to go through the same router (geography would support this).

I'm so glad somebody debugged this problem. Also, I'm quite glad that at least this time I'm not the only person with a weird issue (I have a knack for breaking things).