Bridging a vlan trunk with a gif tunnel?

[Hauke Fath]

On Sun, 1 Apr 2018 16:42:09 +0200, Hauke Fath wrote:
> The main site runs a filtering router (freebsd 11, pf) to connect a 
> dozen subnets via vlans over an ix(4) trunk. The router serves dhcp to 
> several of those subnets. The trunk is bridged to the gif tunnel 
> interface:

FTR:

%ifconfig bridge0
bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 
mtu 1500
	ether 02:eb:25:ed:5e:00
	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: gif0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
	        ifmaxaddr 0 port 9 priority 128 path cost 55
	member: ix0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
	        ifmaxaddr 0 port 1 priority 128 path cost 2000
%

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