Patch from Jim Cipar on tashi-dev@i.a.o
Patch from Jim Cipar on tashi-dev@i.a.o

This patch ensures that entries are removed before being added to DHCP/
DNS



git-svn-id: bf82309ee31681273af20a825c7064ea7c5af838@792257 13f79535-47bb-0310-9956-ffa450edef68

stroucki/tashi,stroucki/tashi,stroucki/tashi