Initial commit, squashed

roles/exit/templates/radvd.conf.j2

@@ -0,0 +1,16 @@
+{# Note that there must be exactly one VLAN-aware bridge. #}
+{% set bridge = interfaces | selectattr('type') | selectattr('type.value', '==', 'bridge') | first %}
+{% set my_vlans = bridge.tagged_vlans | sort(attribute='vid') -%}
+
+# Send IPv6 RAs from virtual router IP for each network. Also set DNS options.
+# Both exits announce the same gateway, so don’t revoke it if we go down.
+{% for vlan in my_vlans %}
+interface bridge-{{ vlan.vid }}-v0 {
+	AdvSendAdvert on;
+	RemoveAdvOnExit off;
+	prefix ::/64;
+	RDNSS {{ dns6 | join(' ') }} { };
+	DNSSL {{ domain }} { };
+};
+
+{% endfor %}