bhyve's VM loose network connectivity after a reboot

[Peter Grehan]

Hi Olivier,

> I'm using bhyve from a 11.0-CURRENT (r270177) host and I meet a problem
> after a VM (guest using fbsd -current too) is rebooted: This VM loose
> network connectivity once rebooted.
> vtnet interface seems OK from the VM, like the tap interface on the host:
> tap status correctly display the new bhyve PID number in its "Opened by"
> section.
>
> But this VM didn't send packet anymore: a "tcpdump -i tap-interface" from
> the host didn't show any packet after a reboot.
>
> Is there something special to do in the "while [ 1 ]" loop of my script,
> other than simply restarting bhyve for fixing this issue ?

  Do you have the net.link.tap.up_on_open sysctl set to 1 ? (didn't see 
that in the BSDRP-lab-bhyve.sh script, if that's the one you're using)

later,

Peter.