epair failure in production on 11.1-STABLE (r328930) ? weird!

[Bjoern A. Zeeb]

On 2 Jul 2018, at 21:11, Dr Josef Karthauser wrote:

> We’re experiencing a strange issue in production failure with epair 
> (which we’re using to talk vimage to jails).
>
> FreeBSD s5 11.1-STABLE FreeBSD 11.1-STABLE #2 r328930: Tue Feb  6 
> 16:05:59 GMT 2018     root at s5:/usr/obj/usr/src/sys/TRUESPEED  amd64
>
> Looks like epair has suddenly stopped forwarding packets between the 
> pair interfaces. Our server has been up for 82 days and it’s been 
> working fine, but suddenly packets have stopped being forwarded 
> between epairs across the entire system. (We’ve got around 30 epairs 
> on the host).  So, we’ve got a sudden ARP resolution failure which 
> is affecting all services. :(.

Ok, that’s a very interesting new observation I have not heard before 
or missed.   You are saying that for about 30 epair pairs NONE is 
working anymore?   All 30 are “dead”?

/bz