diff --git a/host_vars/constellation-dev.adm.crans.org.yml b/host_vars/constellation-dev.adm.crans.org.yml
index e06871f0..3cb7621d 100644
--- a/host_vars/constellation-dev.adm.crans.org.yml
+++ b/host_vars/constellation-dev.adm.crans.org.yml
@@ -1,6 +1,7 @@
 ---
 interfaces:
   adm: eth0
+  srv_nat: eth1
 
 loc_constellation:
   allowed_hosts: