VirtualBox network connectivity broken on recent -CURRENT

[Matthew Macy]

 ---- On Sat, 04 Jun 2016 19:04:42 -0700 Randy Westlund <rwestlun at gmail.com> wrote ---- 
 > On Fri, Jun 03, 2016 at 05:11:24PM -0700, Don Lewis wrote: 
 > > It looks like something changed in -CURRENT to break network 
 > > connectivity to VirtualBox guests.  This was last known to work with 
 > > r299139 (May 6th) and is definitely broken with r301229. 
 >  
 > I've been having VirtualBox networking problems as well.  I can't get my 
 > VMs on the network recently, but I don't recall when it last worked. 
 > Everything looks right from the guest (the arp cache shows the 
 > VirtualBox NAT router), but tcpdump on the host shows no traffic.  I 
 > haven't had time to investigate further :/ 
 > 

The odds of it being fixed will increase greatly if someone would do a bisect and test.
-M