diff --git a/gso/workflows/iptrunk/validate_iptrunk.py b/gso/workflows/iptrunk/validate_iptrunk.py
index 8a9e964bcc6d97b47e946ecd6ca29bd063422f6d..5b2e3f50cf4615962096af32f4838579f418a4cc 100644
--- a/gso/workflows/iptrunk/validate_iptrunk.py
+++ b/gso/workflows/iptrunk/validate_iptrunk.py
@@ -49,7 +49,7 @@ def verify_ipam_records(subscription: Iptrunk) -> None:
         )
 
     for index, side in enumerate(subscription.iptrunk.iptrunk_sides):
-        lag_fqdn = f"{side.iptrunk_side_ae_iface}.{side.iptrunk_side_node.router_fqdn}"
+        lag_fqdn = f"{side.iptrunk_side_ae_iface}-0.{side.iptrunk_side_node.router_fqdn}"
         side_v4 = subscription.iptrunk.iptrunk_ipv4_network[index]
         side_v6 = subscription.iptrunk.iptrunk_ipv6_network[index + 1]
         #  Validate IPv4 address allocation