Protect against incorrect MTU values.
Protect against incorrect MTU values.

dtaht/babeld-shortrtt-metrics,woniullb/babeld,wlanslovenija/babeld,wlanslovenija/babeld,Gwendocg/babeldToS,Gwendocg/babeldToS,Drooids/babeld,boutier/babeld,jech/babeld,tcatm/babeld,jech/babeld,sudomesh/babeld