I don't think it's wise to make RTNETLINK facilities dependant upon ifdef values. Please kill CONFIG_IPV6_PREFIXLIST. People don't need to to enable funny options to get a fully function dhcp on ipv4, they should therefore not have to for ipv6 either. - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html