diff --git a/ddnsupd.sh b/ddnsupd.sh
index 156250c..0fa5ba7 100644
--- a/ddnsupd.sh
+++ b/ddnsupd.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-oldip=0
+(oldip=0
 
 while /bin/true
 do ip=$(ifconfig eth0 | grep 'inet addr:' | awk -F '[:]' '{ print $2 }' | awk '{ print $1}')
@@ -11,5 +11,5 @@ echo updated $oldip to $ip
 oldip=$ip
 fi
 sleep 60
-done
+done ) &