Wireless/Wired LAN autoswitch

[[LoN]Kamikaze]

Dhclient dies when its interface is turned down. You don't have to use
killall. However even if an interface is down it will still confuse
routing when it has a valid IP. Thus I advice you the following if you
unplug:

# ifconfig interface0 0.0.0.0 down
# route flush
# route add default -interface interface1

You have to replace inteface0 and 1 with whatever suits your system.

Derrick Ryalls wrote:
> Greetings mobile subscribers,
> 
> I have been playing around with trying to get wireless/wired switching
> working on my 6.1 PRERELEASE laptop, but haven't had much luck.  I can
> control the wired connection via ifconfig and the wireless via
> wpa_supplicant, but I am having a difficult time getting the routing
> adjusted when I plug/unlpug the network cable.
> 
> I am new to wireless in FreeBSD and don't have a lot of experience with
> using ifconfig/route in general, so maybe I am doing something brain dead.
> I tried the following workflow:
> 
> killall dhcp
> route flush
> (exec start wpa_supplicant script)
> route add 192.168.2.1 (for wireless)
> 
> 
> But that doesn't seem to work.  I have had the best luck when I do ifconfig
> bfe0 down to force not using the wired connection.  I have also tried
> putting the script in /etc/devd.conf but I it didn't work as I expected, so
> I doubt I had that configured correctly.
> 
> I guess my question comes in 2 parts. a) Besides using cron and scraping
> ifconfig, how do I detect the plug/unplug events and b) how do I reliable
> change the routing table to point to the correct gateway?
> 
> Thanks for any pointers.