ssh tunnel via specific interface

Question

Client -ssh-> Server --> Internet

Normally I initiate an ssh tunnel with: ssh -D 1337 admin@nas

On the server I have two interfaces: eth1 and ppp0. Right now it uses eth1 when tunneling, but I'd like to use ppp0 instead.

How do I do this?

Answer 1

You're looking for -b. But this is pointless unless ppp0 already has a route to nas.