diff --git a/installer/bin/clean.sh b/installer/bin/clean.sh
index 5e45287c..6d573a4d 100755
--- a/installer/bin/clean.sh
+++ b/installer/bin/clean.sh
@@ -89,7 +89,7 @@ fuSURICATA () {
   chmod 760 -R /data/suricata
   chown tpot:tpot -R /data/suricata
   # Get IF, disable offloading, enable promiscious mode
-  myIF=$(route | grep default | awk '{ print $8 }')
+  myIF=$(ip route | grep $(hostname -I | awk '{print $1 }') | awk '{print $3 }')
   /sbin/ethtool --offload $myIF rx off tx off
   /sbin/ethtool -K $myIF gso off gro off
   /sbin/ip link set $myIF promisc on