OSPF interface going down, why?

[Ruben Laban]

Hi,

I was wondering about possible causes for the following log message:
2014-04-02 05:14:02 <TRACE> ospf1: Changing state of iface vlan0251 
from ptp to down

No other log messages prior to this one currently. I did enable debug 
logging hoping it would shed some more light on the issue. But I don't 
know when it'll happen again. This is bird 1.3.8 running in a vSphere 
VM, so there's plenty of areas where network issues could arise.

Regards,
Ruben Laban