I applied the patch to see if it'd help, it didn't. I am not using a bridge.
I did find more entries in the event log though.
I see "The service is publishing to the network." from fdrespub which is almost always followed by a DHCP request which succedes. This is only a brief disconnect, but it is annoying. Interupts voip calls and such.
then you'd better use a fixed IP for your lan, you're not the only one having DHCP problems and there doesn't seem to be a solution for that.
once you use a fixed IP you can see if it's really a dhcp problem (the disconnections should stop) or a connection problem.