autoipd: fix debian's dhcp path
autoipd: fix debian's dhcp path

As discussed with mbiebl on IRC

heftig/avahi-1,gloryleague/avahi,heftig/avahi,lathiat/avahi,Distrotech/avahi,lathiat/avahi,Distrotech/avahi,Distrotech/avahi,catta-x/catta,Kisensum/xmDNS-avahi,Distrotech/avahi,heftig/avahi,lathiat/avahi,catta-x/catta,lathiat/avahi,everbase/catta,everbase/catta,catta-x/catta,lathiat/avahi,Kisensum/xmDNS-avahi,heftig/avahi-1,heftig/avahi,gloryleague/avahi,gloryleague/avahi,heftig/avahi,gloryleague/avahi,heftig/avahi-1,heftig/avahi-1,lathiat/avahi,everbase/catta,heftig/avahi,heftig/avahi-1,gloryleague/avahi,Kisensum/xmDNS-avahi,Distrotech/avahi,heftig/avahi-1,heftig/avahi,Kisensum/xmDNS-avahi,Kisensum/xmDNS-avahi,Distrotech/avahi,Kisensum/xmDNS-avahi,gloryleague/avahi