tap interfaces disappears after bhyve guests shutdowns

[C. L. Martinez]

On Tue, Feb 14, 2017 at 01:26:49PM +0000, C. L. Martinez wrote:
> On Tue, Feb 14, 2017 at 01:29:57PM +0100, Miroslav Lachman wrote:
> > C. L. Martinez wrote on 2017/02/14 12:57:
> > > On Mon, Feb 13, 2017 at 02:02:48PM +0100, Daniel Niculescu wrote:
> > 
> > > 
> > > Thanks Daniel. I have tried what you say, but ping doesn't works between host and guest. If I put an ip to the bridge works ok, but not when I assign an ip to tap interface.
> > > 
> > > Any idea why??
> > 
> > Are you using IPs from the same subnet on host and in a guests? What IP did
> > you assign to tap / bridge?
> > 
> > Miroslav Lachman
> 
> Yes. For host: 172.22.55.1/24 and for guest 172.22.55.29/24. When I assign IP 172.22.55.1 to the bridge on host side, host and guest can communicate. But when I assign 172.22.55.1 to a tap interface on the host and create a bridge with host's tap interface and guest's tap interface, there is no comms between them ... And I don't understand why ...
> 
> 
> -- 
> Greetings,
> C. L. Martinez

Ok, I think I have found the problem (but not the solution :( ) ...

prodif: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
	ether 02:bc:f9:66:98:01
	nd6 options=9<PERFORMNUD,IFDISABLED>
	groups: bridge 
	id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
	maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200
	root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
	member: tap11 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
	        ifmaxaddr 0 port 7 priority 128 path cost 2000000
	member: tap10 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
	        ifmaxaddr 0 port 6 priority 128 path cost 2000000
pubif: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
	ether 02:bc:f9:66:98:02
	nd6 options=9<PERFORMNUD,IFDISABLED>
	groups: bridge 
	id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
	maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200
	root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
	member: tap21 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
	        ifmaxaddr 0 port 9 priority 128 path cost 2000000
	member: tap20 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
	        ifmaxaddr 0 port 8 priority 128 path cost 2000000
tap10: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
	options=80000<LINKSTATE>
	ether 00:bd:1d:15:f7:0a
	nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
	media: Ethernet autoselect
	status: active
	groups: tap 
	Opened by PID 79946
tap11: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
	options=80000<LINKSTATE>
	ether 00:bd:24:15:f7:0b
	inet 172.22.55.1 netmask 0xffffffe0 broadcast 172.22.55.31 
	nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
	media: Ethernet autoselect
	status: no carrier
	groups: tap 
tap20: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
	options=80000<LINKSTATE>
	ether 00:bd:2b:15:f7:14
	nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
	media: Ethernet autoselect
	status: active
	groups: tap 
	Opened by PID 79946
tap21: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
	options=80000<LINKSTATE>
	ether 00:bd:31:15:f7:15
	inet 172.30.77.1 netmask 0xfffffff8 broadcast 172.30.77.7 
	nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
	media: Ethernet autoselect
	status: no carrier
	groups: tap

 .. As you can see with tap21 and tap11 (tap interfaces assigned to host) status is: no carrier ... ¿¿¿¿¿???? Why?? Both are assigned to bridges ...

-- 
Greetings,
C. L. Martinez