ensure zero'd bits outside of netmask in route_add(), and enforce IPv4 for now
ensure zero'd bits outside of netmask in route_add(), and enforce IPv4 for now


git-svn-id: 935794000d934034fad4bb4152be248a7507e5ff@474 0c474577-fa26-0410-a966-bdb198e94e9e

hellais/libdnet,hellais/libdnet,hellais/libdnet,hellais/libdnet