mangle_contents   162 net/ipv4/netfilter/nf_nat_helper.c 	mangle_contents(skb, iph->ihl*4 + tcph->doff*4,
mangle_contents   244 net/ipv4/netfilter/nf_nat_helper.c 	mangle_contents(skb, iph->ihl*4 + sizeof(*udph),