Allow zero-cost external routes.
Allow zero-cost external routes.

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