rt6_ifdown 114 include/net/ip6_route.h extern void rt6_ifdown(struct net *net, struct net_device *dev); rt6_ifdown 2607 net/ipv6/addrconf.c rt6_ifdown(net, dev); rt6_ifdown 1529 net/ipv6/ip6_fib.c rt6_ifdown(net, NULL);