rem: void loopback_input(struct mbuf *buf)
add: static void loopback_input(struct mbuf *buf)
context: void loopback_input(struct mbuf *buf){	if (!buf)		return;	buf->m_pkthdr.rcvif = me;		if (proto[IPPROTO_IP] && proto[IPPROTO_IP]->pr_input) {		proto[IPPROTO_IP]->pr_input(buf, 0);		return;	} else		printf("No input tourtine found for IP\n");	m_freem(buf);	return;}