activate IP multicast, request by nico for stable version, and a frind of mine like to play with mdns

SVN-Revision: 232

openwrt/package/linux/linux.config

@@ -292,7 +292,7 @@ CONFIG_NETFILTER=y
 # CONFIG_FILTER is not set
 CONFIG_UNIX=y
 CONFIG_INET=y
-# CONFIG_IP_MULTICAST is not set
+CONFIG_IP_MULTICAST=y
 CONFIG_IP_ADVANCED_ROUTER=y
 CONFIG_IP_MULTIPLE_TABLES=y
 CONFIG_IP_ROUTE_FWMARK=y
@@ -303,6 +303,8 @@ CONFIG_IP_ROUTE_TOS=y
 # CONFIG_IP_PNP is not set
 CONFIG_NET_IPIP=m
 CONFIG_NET_IPGRE=m
+# CONFIG_NET_IPGRE_BROADCAST is not set
+# CONFIG_IP_MROUTE is not set
 # CONFIG_ARPD is not set
 # CONFIG_INET_ECN is not set
 # CONFIG_SYN_COOKIES is not set