compat: apply DHCLIENT_ROUTE_PRIORITY (bnc#879842)
dhcp4: set a protocol dhcp hint to all routes
addrconf: added a lease priority function
routes: added equal destination/gateway utilities
server: do not apply duplicate routes (bnc#879842)
Merge pull request #266 from mtomaschewski/route-dups

do not apply duplicate routes (bnc#879842)