My wireless setup: I have two local AP's both acting as DHCP servers (The #1 directly faces the internet while #2 goes through #1 to provide internet access, the point of #2 is it allows access to local devices plus advanced firewall). So I usually connect thru #1 (192.168.0.x) and only thru #2 (192.168.1.x) if need be.
After the last d-u, upon reboot, the box associated as usual with #1 but the route table was somehow corrupted (or maybe more precisely, not thoroughly updated as it was usually the case before the d-u). Dissociating and reconnecting twice to both AP's seemed to solve the problem.
However, after last night suspend (lid closed), the pbm went back this morning. No internet (ping returned network unreachable) upon wake up while the box still seemed to be associated with #1. An association to #2 (via the graphical NetworkManager applet) did solve the problem up until now but trying the same with #1 doesn't work (route table still corrupted).
Any hint? Maybe someone who often changes wireless networks has found similar pbm?