A bit late for me to post on this but it might help others.
Yes, that just happend for me too. It complains that no subnet is declared for eth1 which it should not do as this is the outside facing the public internet and dhcp should not be sending and receiving here. It just started to do that out of the blue...
Anyway, I declared one on eth1 and now it starts with no problems. Could be caused by one of the updates but im not clever enough to figure that out...
Btw, reconfigure from console didnt fix it. editing etc/dhcpd.conf did.