Looking for some help from the group. Hopefully its a simple request..
I want the Pi to be connected to 2 different networks-eth0 on network1, and wlan0 on network2-mainly for a resiliency project. Upon bootup, eth0 seems to be the dominant connection? I would like to be able to remotely disable eth0 (so connected by ssh), and then let wlan0 take over all routing/traffic. When I try this, and either
a) physically disconnect eth0
b) perform a sudo ifdown eth0
eht0 does go down, wlan0 stays up-but no traffic passes over wlan0! I'm not sure if this is a firewall thing, or there is a further action after the ifdown I need to invoke?
When I reboot, eth0 comes back up, again as the dominant connection. One of the other reasons for this is that I would like the choice of sending/receiving traffic on the interface I choose, rather than leaving it up to the Pi I'm doing all this with the Pi beside me, as if ssh is travelling over the Pi via eth0, what solution I can try, has to then either resume the ssh connection-or at least be able to disconnect, and then ssh over the wlan0 link.
Hope this makes sense!