#include <u.h>#include <libc.h>#include <ip.h> voidmain(void){	Ipifc *ifc, *list;	Iplifc *lifc;	int i; 	fmtinstall('I', eipfmt);	fmtinstall('M', eipfmt); 	list = readipifc("/net", nil, -1);	for(ifc = list; ifc; ifc = ifc->next){		print("ipifc %s %d\n", ifc->dev, ifc->mtu);		for(lifc = ifc->lifc; lifc; lifc = lifc->next)			print("\t%I %M %I\n", lifc->ip, lifc->mask, lifc->net);	}}