xn0 systat no egress data?

[Pete Wright]

hey all - this is regarding the following bug i've opened:

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=213814

tl;dr version is that on 11.0-RELEASE on EC2 when i invoke "systat 
-ifstat" the egress data flows for the xn0 device do not update. 
verified it works as expected on 10.3-RELEASE.  tried reading through 
code but am pretty confused as to how xn0 is created and what code is 
used to update the sysctl MIBs.

thoughts?
-pete

-- 
Pete Wright
pete at nomadlogic.org
nomadlogicLA