Flush network buffers before exit.
Flush network buffers before exit.

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