set htype 1: 10mbps ethernet

Reference: /n/atom/patch/applied2013/dhcpchwt
Date: Thu Jun 20 00:58:30 CES 2013
Signed-off-by: quanstro@quanstro.net

--- /sys/src/cmd/ip/dhcpclient.c	Thu Jun 20 00:58:19 2013
+++ /sys/src/cmd/ip/dhcpclient.c	Thu Jun 20 00:58:19 2013
@@ -229,7 +229,7 @@
 
 	hnputs(up->rport, 67);
 	bp.op = Bootrequest;
-bp.htype = 1;
+	bp.htype = 1;				/* arp hwtype type 1; 10Mbps ethernet */
 	hnputl(bp.xid, dhcp.xid);
 	hnputs(bp.secs, time(0) - dhcp.starttime);
 	hnputs(bp.flags, Fbroadcast);		/* reply must be broadcast */
@@ -353,7 +353,7 @@
 	int n, fd, cfd;
 	char data[128], devdir[40];
 
-	snprint(data, sizeof data, "%s/udp!*!bootpc", net);
+	snprint(data, sizeof data, "%s/udp!*!68", net);
 	for(n = 0; ; n++) {
 		cfd = announce(data, devdir);
 		if(cfd >= 0)