Use ping -n; if we're running a local nameserver, it may try to

reverse-resolve the IP address we're given, which will take a while
to time out, since we're still scanning cached leases (i.e. the network
isn't up yet).

usr.sbin/dhcp/client/scripts/netbsd

@@ -130,7 +130,7 @@ if [ x$reason = xTIMEOUT ]; then
   sleep 1
   if [ "$new_routers" != "" ]; then
     set $new_routers
-    if ping -q -c 1 -w 1 $1; then
+    if ping -n -q -c 1 -w 1 $1; then
       if [ x$new_ip_address != x$alias_ip_address ] && \
 			[ x$alias_ip_address != x ]; then
 	ifconfig $interface inet alias $alias_ip_address $alias_subnet_arg