diff --git a/scripts/compute-ext-net.sh b/scripts/compute-ext-net.sh
index ead559c..5c59a85 100755
--- a/scripts/compute-ext-net.sh
+++ b/scripts/compute-ext-net.sh
@@ -4,7 +4,7 @@
 apt-get install bridge-utils
 brctl addbr databr
 ifconfig databr 192.168.0.254/24 up
-ip link add type veth
+ip link add address 02:42:c0:a8:00:01 type veth
 ifconfig veth0 up
 ifconfig veth1 up
 brctl addif databr veth0