Probably works

templates/wg0.conf.j2

@@ -0,0 +1,24 @@
+{{ ansible_managed | comment }}
+# Relay tunnel. This box forwards nothing; see the sysctl and nftables
+# tasks in wg-relay.yml.
+
+[Interface]
+Address = {{ wg_address }}
+ListenPort = {{ wg_listen_port }}
+MTU = {{ wg_mtu }}
+PrivateKey = {{ wg_relay_effective_private_key }}
+
+{% for peer in wg_peers %}
+# {{ peer.name }}
+[Peer]
+PublicKey = {{ peer.public_key }}
+AllowedIPs = {{ peer.allowed_ips }}
+{% if peer.endpoint is defined and peer.endpoint %}
+Endpoint = {{ peer.endpoint }}
+{% endif %}
+{% if peer.preshared_key is defined and peer.preshared_key %}
+PresharedKey = {{ peer.preshared_key }}
+{% endif %}
+PersistentKeepalive = {{ peer.keepalive | default(25) }}
+
+{% endfor %}