Force network interface for safari

It's pretty much down to the routes you have on the box. Open the terminal and do 'netstat -rn' and you'll see something like this:

Code:

Internet:
Destination        Gateway            Flags    Refs      Use  Netif Expire
default            192.168.0.1        UGSc       50       11    en0
127                127.0.0.1          UCS         0        0    lo0
127.0.0.1          127.0.0.1          UH         13    21107    lo0
169.254            link#4             UCS         0        0    en0
192.168.0          link#4             UCS         3        0    en0
192.168.0.1        0:14:bf:xx:xx:xx   UHLW       50        2    en0   1174
192.168.0.10       0:d:b:xx:xx:xx     UHLW        0      120    en0    904
192.168.0.104      127.0.0.1          UHS         0        4    lo0
192.168.0.255      link#4             UHLWb       3      110    en0

You'll have additional routes for each network. The 'default' route at the top will be the route used to get out to the public internet.

You can change the default route to be your bluetooth network as long as you know what the address for the router is.

Add a new default route like this

route add default the.blootouth.ip.address

Then delete the old route

route delete default the.old.gateway.ip

You will still be able to connect to stuff on your local network, providing it is on the same subnet, if it isn't you'll need to add specific routes for other networks.

If you want this to persist across a reboot you'll probably need to do something with NetInfo but I'm not sure what.