I'm running a trunk build on a tplink wr4300. The "WAN" port is connected to a network that provides
DHCP and an internet connection. When the 4300 is rebooted, it picks up the wan dhcp address, and
the default route is set to the one provided by dhcp - perfect.
After a couple of hours, the default route disappears. The wan connection is still up, and active, and you
can ping hosts on the same subnet as the default gateway, and even ping the default gateway, but
if you do a netstat -r, there is no longer a default route defined. There is no entry in the syslog or
kernel log to indicate the reason for the route going away.
This has only started happening since I updated from a trunk build from about 3 months ago, to the current