diff --git a/.changelog/7474.txt b/.changelog/7474.txt
new file mode 100644
index 0000000000..8ec013c069
--- /dev/null
+++ b/.changelog/7474.txt
@@ -0,0 +1,3 @@
+```release-note:none
+
+```
diff --git a/website/docs/r/compute_instance_group_manager.html.markdown b/website/docs/r/compute_instance_group_manager.html.markdown
index 66bdee2b0f..2a6f26db5c 100644
--- a/website/docs/r/compute_instance_group_manager.html.markdown
+++ b/website/docs/r/compute_instance_group_manager.html.markdown
@@ -294,13 +294,13 @@ one of which has a `target_size.percent` of `60` will create 2 instances of that
 
 <a name="nested_stateful_internal_ip"></a>The `stateful_internal_ip` block supports:
 
-* `interface_name` - (Required), The network interface name of the internal Ip.
+* `interface_name` - (Required), The network interface name of the internal Ip. Possible value: `nic0`
 
 * `delete_rule` - (Optional), A value that prescribes what should happen to the internal ip when the VM instance is deleted. The available options are `NEVER` and `ON_PERMANENT_INSTANCE_DELETION`. `NEVER` - detach the ip when the VM is deleted, but do not delete the ip. `ON_PERMANENT_INSTANCE_DELETION` will delete the internal ip when the VM is permanently deleted from the instance group.
 
 <a name="nested_stateful_external_ip"></a>The `stateful_external_ip` block supports:
 
-* `interface_name` - (Required), The network interface name of the external Ip.
+* `interface_name` - (Required), The network interface name of the external Ip. Possible value: `nic0`
 
 * `delete_rule` - (Optional), A value that prescribes what should happen to the external ip when the VM instance is deleted. The available options are `NEVER` and `ON_PERMANENT_INSTANCE_DELETION`. `NEVER` - detach the ip when the VM is deleted, but do not delete the ip. `ON_PERMANENT_INSTANCE_DELETION` will delete the external ip when the VM is permanently deleted from the instance group.
 
diff --git a/website/docs/r/compute_region_instance_group_manager.html.markdown b/website/docs/r/compute_region_instance_group_manager.html.markdown
index 3e42728e88..d8fc9a22dd 100644
--- a/website/docs/r/compute_region_instance_group_manager.html.markdown
+++ b/website/docs/r/compute_region_instance_group_manager.html.markdown
@@ -303,13 +303,13 @@ one of which has a `target_size.percent` of `60` will create 2 instances of that
 
 <a name="nested_stateful_internal_ip"></a>The `stateful_internal_ip` block supports:
 
-* `interface_name` - (Required), The network interface name of the internal Ip.
+* `interface_name` - (Required), The network interface name of the internal Ip. Possible value: `nic0`.
 
 * `delete_rule` - (Optional), A value that prescribes what should happen to the internal ip when the VM instance is deleted. The available options are `NEVER` and `ON_PERMANENT_INSTANCE_DELETION`. `NEVER` - detach the ip when the VM is deleted, but do not delete the ip. `ON_PERMANENT_INSTANCE_DELETION` will delete the internal ip when the VM is permanently deleted from the instance group.
 
 <a name="nested_stateful_external_ip"></a>The `stateful_external_ip` block supports:
 
-* `interface_name` - (Required), The network interface name of the external Ip.
+* `interface_name` - (Required), The network interface name of the external Ip. Possible value: `nic0`.
 
 * `delete_rule` - (Optional), A value that prescribes what should happen to the external ip when the VM instance is deleted. The available options are `NEVER` and `ON_PERMANENT_INSTANCE_DELETION`. `NEVER` - detach the ip when the VM is deleted, but do not delete the ip. `ON_PERMANENT_INSTANCE_DELETION` will delete the external ip when the VM is permanently deleted from the instance group.