netlink ?

Have got a very recent CVS kernel up and running on a 712/60 and want to use it for messing with the Linux IP advanced router capabilities.

kernel .config has netlink and rtlink set, but ls -l /proc/net shows no sign of netlink (compared to i386 which does) and iproute2 ip reports:

ip a l
Cannot open netlink socket: Address family not supported by protocol

/var/log contents are not much use.

Can anyone help me understand why this doesn't just work right out of the box :)

thanks much, Andy

extract of .config ...

# Networking options
#
CONFIG_PACKET=y
# CONFIG_PACKET_MMAP is not set
CONFIG_NETLINK=y
CONFIG_RTNETLINK=y
CONFIG_NETLINK_DEV=y
CONFIG_NETFILTER=y
# CONFIG_NETFILTER_DEBUG is not set
CONFIG_FILTER=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_RTNETLINK=y
CONFIG_NETLINK=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_IP_ROUTE_FWMARK=y
CONFIG_IP_ROUTE_NAT=y
CONFIG_IP_ROUTE_MULTIPATH=y
CONFIG_IP_ROUTE_TOS=y
CONFIG_IP_ROUTE_VERBOSE=y