Client Script fixes

[ISC-Bugs #23045] Typos in client/scripts/openbsd
[ISC-Bugs #23565] In the client scripts add a zone id (interface id) if
the domain search address is link local.
[ISC-Bugs #1277] In some of the client scripts add code to handle the
case of the default router information being changed without the address
being changed.

client/scripts/freebsd

@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# $Id: freebsd,v 1.23 2009/04/21 14:09:57 pselkirk Exp $
+# $Id: freebsd,v 1.24 2011/05/18 19:55:44 sar Exp $
 #
 # $FreeBSD$
 
@@ -59,7 +59,14 @@ make_resolv_conf() {
 	if [ $exit_status -ne 0 ] ; then
 	  break
 	fi
-        ( echo nameserver ${nameserver} >> /etc/resolv.conf.dhclient6 )
+	# If the nameserver has a link-local address
+	# add a <zone_id> (interface name) to it.
+	case $nameserver in
+	    fe80:*) zone_id="%$interface";;
+	    FE80:*) zone_id="%$interface";;
+	    *)      zone_id='';;
+	esac
+	( echo nameserver ${nameserver}$zone_id >> /etc/resolv.conf.dhclient6 )
 	exit_status=$?
       done
 
@@ -208,6 +215,25 @@ if [ x$reason = xBOUND ] || [ x$reason = xRENEW ] || \
 	shift; shift
       done
     fi
+  else                                                                        
+    # we haven't changed the address, have we changed other options           
+    # that we wish to update?
+    if [ x$new_routers != x ] && [ x$new_routers != x$old_routers ] ; then
+      # if we've changed routers delete the old and add the new.
+      $LOGGER "New Routers: $new_routers"
+      for router in $old_routers; do
+        route delete default $router >/dev/null 2>&1
+      done
+      for router in $new_routers; do
+        # If the subnet is captive, eg the netmask is /32 but the default
+        # gateway is (obviously) outside of this, then we need to produce a
+        # host route to reach the gateway.
+        if [ "x$new_subnet_mask" = "x255.255.255.255" ] ; then
+          route add -host $router -interface $interface
+        fi
+        route add default $router >/dev/null 2>&1
+      done
+    fi
   fi
   if [ x$new_ip_address != x$alias_ip_address ] && [ x$alias_ip_address != x ];
    then