#include <u.h>#include <libc.h>#include <ip.h> intmyetheraddr(uchar *to, char *dev){	int n, fd;	char buf[256], *ptr; 	/* Make one exist */	if(*dev == '/')		sprint(buf, "%s/clone", dev);	else		sprint(buf, "/net/%s/clone", dev);	fd = open(buf, ORDWR);	if(fd >= 0)		close(fd); 	if(*dev == '/')		sprint(buf, "%s/0/stats", dev);	else		sprint(buf, "/net/%s/0/stats", dev);	fd = open(buf, OREAD);	if(fd < 0)		return -1; 	n = read(fd, buf, sizeof(buf)-1);	close(fd);	if(n <= 0)		return -1;	buf[n] = 0; 	ptr = strstr(buf, "addr: ");	if(!ptr)		return -1;	ptr += 6; 	parseether(to, ptr);	return 0;}