For whoever wants to fix an unused variable in netfilter

net/netfilter/nfnetlink.c: In function 'nfnetlink_rcv': net/netfilter/nfnetlink.c:363:14: warning: unused variable 'net' [-Wunused-variable] struct net *net = sock_net(skb->sk); ^ Have fun! -- Raphael S. Carvalho