ifr6_prefixlen     36 include/uapi/linux/ipv6.h 	__u32		ifr6_prefixlen;
ifr6_prefixlen   3048 net/ipv6/addrconf.c 	cfg.plen = ireq.ifr6_prefixlen;
ifr6_prefixlen   3069 net/ipv6/addrconf.c 			     ireq.ifr6_prefixlen);