papazoga

DHCP option 26 is not the answer for setting MTU. All major operating systems ignore it (unless something has changed radically in the last couple of years). Here is how...

> On the servers, we have batman fragmentation disabled. Incoming packets get routed here, not switched, so going doing from the uplink MTU to the one of our network should...

> That would be outgoing packets. Batman will fragment them, so while the PMTU is not discovered properly, at least things will work -- right? I see. Yes; if batman...

> We have >500 access points coming and going dynamically, and anybody can set up a new one. Wow. That sounds like an excellent test-bed for developing a free solution...