Correctly bring up optional interface dhclient
Correctly bring up optional interface dhclient

Reported-by: databeestje

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