Consider parent mtu when it's set instead of default one
Consider parent mtu when it's set instead of default one

BlackstarGroup/pfsense,ptorsten/pfsense,pfsense/pfsense,brunostein/pfsense,NOYB/pfsense,phil-davis/pfsense,dennypage/pfsense,NewEraCracker/pfsense,jxmx/pfsense,ch1c4um/pfsense,ch1c4um/pfsense,ch1c4um/pfsense,phil-davis/pfsense,pfsense/pfsense,ch1c4um/pfsense,phil-davis/pfsense,brunostein/pfsense,NewEraCracker/pfsense,dennypage/pfsense,NewEraCracker/pfsense,NOYB/pfsense,BlackstarGroup/pfsense,BlackstarGroup/pfsense,jxmx/pfsense,dennypage/pfsense,pfsense/pfsense,BlackstarGroup/pfsense,NOYB/pfsense,phil-davis/pfsense,dennypage/pfsense,pfsense/pfsense,ptorsten/pfsense,ptorsten/pfsense,jxmx/pfsense,brunostein/pfsense,NewEraCracker/pfsense