diff --git a/t/fixtures/output/instance_info_A b/t/fixtures/output/instance_info_A
index 99aa68f2..bd8fe18c 100644
--- a/t/fixtures/output/instance_info_A
+++ b/t/fixtures/output/instance_info_A
@@ -24,10 +24,12 @@ instance_info:
   interfaces:
   - ip: 172.30.52.204
     name: vlan1719
-    type: sip_ext
+    type:
+    - sip_ext
   - ip: 172.30.52.146
     name: vlan1720
-    type: sip_int
+    type:
+    - sip_int
   label: lb
   name: A
   service: kamailio-lb
diff --git a/t/fixtures/repos/network_carrier_instances.yml b/t/fixtures/repos/network_carrier_instances.yml
index f316c7a8..1569e748 100644
--- a/t/fixtures/repos/network_carrier_instances.yml
+++ b/t/fixtures/repos/network_carrier_instances.yml
@@ -784,10 +784,12 @@ instances:
     interfaces:
       - name: vlan1719
         ip: 172.30.52.204
-        type: sip_ext
+        type:
+          - sip_ext
       - name: vlan1720
         ip: 172.30.52.146
-        type: sip_int
+        type:
+          - sip_int
     connections:
       proxy_algorithm: serial
       proxy:
@@ -816,10 +818,12 @@ instances:
     interfaces:
       - name: vlan1719
         ip: 172.30.52.203
-        type: sip_ext
+        type:
+          - sip_ext
       - name: vlan1720
         ip: 172.30.52.145
-        type: sip_int
+        type:
+          - sip_int
     connections:
       proxy_algorithm: serial
       proxy:
diff --git a/t/fixtures/repos/network_pro_instances.yml b/t/fixtures/repos/network_pro_instances.yml
index df6b8de1..ff5eaf69 100644
--- a/t/fixtures/repos/network_pro_instances.yml
+++ b/t/fixtures/repos/network_pro_instances.yml
@@ -166,10 +166,12 @@ instances:
     interfaces:
       - name: neth2
         ip: 192.168.2.250
-        type: sip_ext
+        type:
+          - sip_ext
       - name: neth1
         ip: 192.168.255.253
-        type: sip_int
+        type:
+          - sip_int
     connections:
       proxy_algorithm: serial
       proxy:
@@ -198,10 +200,12 @@ instances:
     interfaces:
       - name: neth2
         ip: 192.168.2.251
-        type: sip_ext
+        type:
+          - sip_ext
       - name: neth1
         ip: 192.168.255.254
-        type: sip_int
+        type:
+          - sip_int
     connections:
       proxy_algorithm: serial
       proxy: