diff --git a/host_vars/synapse.adm.ynerant.fr.yml b/host_vars/synapse.adm.ynerant.fr.yml
new file mode 100644
index 0000000..2eb6f99
--- /dev/null
+++ b/host_vars/synapse.adm.ynerant.fr.yml
@@ -0,0 +1,4 @@
+---
+interfaces:
+  adm: eth0
+  srv_nat: eth1