use a valid refresh method

smf/zone-network-setup/manifest.xml

@@ -12,7 +12,7 @@
   <service_fmri value='svc:/milestone/network:default' />
   </dependency>
 
-  <!-- Run after the NDP daemon is online.. -->
+  <!-- Run after the NDP daemon is online. -->
   <dependency name='ndp' grouping='require_all' restart_on='none'
     type='service'>
   <service_fmri value='svc:/network/routing/ndp:default' />
@@ -31,7 +31,10 @@
     timeout_seconds='0' />
 
   <exec_method type='method' name='stop' exec=':true' timeout_seconds='0' />
-  <exec_method type='method' name='refresh' exec=':kill -USR1' timeout_seconds='0' />
+  <!-- We use the same command as the start method as it is safe to rerun. -->
+  <exec_method type='method' name='refresh'
+    exec='/opt/oxide/zone-setup-cli/bin/zone-setup common-networking -d %{config/datalink} -s %{config/static_addr} -g %{config/gateway}'
+    timeout_seconds='0' />
 
   <property_group name='startd' type='framework'>
     <propval name='duration' type='astring' value='transient' />