Do you restart your router / how often?

A SIGHUP should do the trick...

"Should" or "does"? This is a rather moot discussion....

Indeed. Does. This is not distro specific.

But lets leave it at that :wink:

I want to reiterate what @eduperez said:

OpenWrt developers work really hard to design a system that could run perpetually. There are NO circumstances that should require a reboot to 'clear stuff out' in normal operation.

If you reliably encounter a problem that occurs after running for a while, please help us out and report it as a bug Thanks.