New files:

Modified files:
include/net/netns/ipv4.h
include/linux/icmp.h
net/core/dev.c
net/ipv6/af_inet6.c
net/ipv4/sysctl_net_ipv4.c
include/net/netns/ipv6.h
net/ipv6/icmp.c
net/ipv4/icmp.c