--- a/ip/ifcfg	2015-08-31 16:31:15.000000000 -0700
+++ b/ip/ifcfg	2016-06-16 00:14:36.670926572 -0700
@@ -15,7 +15,10 @@
 }
 
 RestartRDISC () {
-  killall -HUP rdisc || rdisc -fs
+  #killall is shipped with psmisc package which is not installed by default
+  # on minimal photon installation, use pkill command instead.
+  #killall -HUP rdisc || rdisc -fs
+  pkill -HUP '^rdisc*' || rdisc -fs
 }
 
 ABCMaskLen () {