A correction: when I try to bridge together the ppp interface
(tun0) and the existing rl0 interface, I don't get a
SIOCFLAGSsomething error as I mentioned in my original post,
rather a "invalid argment":
r...@firewall01:~ # ifconfig bridge0 create
r...@firewall01:~ # brconfig bridge0 add rl0
r...@firewall01:~ # brconfig
bridge0: flags=0<>
priority 32768 hellotime 2 fwddelay 15 maxage 20 holdcnt 6 proto
rstp
rl0 flags=3<LEARNING,DISCOVER>
port 1 ifpriority 0 ifcost 0
Addresses (max cache: 100, timeout: 240):
r...@firewall01:~ # brconfig bridge0 add tun0
brconfig: bridge0: tun0: Invalid argument
