#include <u.h>#include <libc.h>#include <ip.h> static uchar loopbacknet[IPaddrlen] = {	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0xff, 0xff,	127, 0, 0, 0};static uchar loopbackmask[IPaddrlen] = {	0xff, 0xff, 0xff, 0xff,	0xff, 0xff, 0xff, 0xff,	0xff, 0xff, 0xff, 0xff,	0xff, 0, 0, 0}; // find first ip addr that isn't the friggin loopback address// unless there are no othersintmyipaddr(uchar *ip, char *net){	Ipifc *nifc;	Iplifc *lifc;	static Ipifc *ifc;	uchar mynet[IPaddrlen]; 	ifc = readipifc(net, ifc, -1);	for(nifc = ifc; nifc; nifc = nifc->next)		for(lifc = nifc->lifc; lifc; lifc = lifc->next){			maskip(lifc->ip, loopbackmask, mynet);			if(ipcmp(mynet, loopbacknet) == 0){				continue;			}			if(ipcmp(lifc->ip, IPnoaddr) != 0){				ipmove(ip, lifc->ip);				return 0;			}		}	ipmove(ip, IPnoaddr);	return -1;}