From ce31caee6ce414fd3abd3b323b5ccfeda6733986 Mon Sep 17 00:00:00 2001
From: Trygve Laugstøl <trygvis@inamo.no>
Date: Wed, 17 Jul 2024 20:38:43 +0200
Subject: routedbits

---
 tnet/templates/bird-tnet.conf.j2 | 38 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 37 insertions(+), 1 deletion(-)

(limited to 'tnet/templates/bird-tnet.conf.j2')

diff --git a/tnet/templates/bird-tnet.conf.j2 b/tnet/templates/bird-tnet.conf.j2
index 57e557a..b11bf0c 100644
--- a/tnet/templates/bird-tnet.conf.j2
+++ b/tnet/templates/bird-tnet.conf.j2
@@ -27,13 +27,49 @@ template bgp tnet_tpl {
   };
 }
 {% for p in tnet_bird_peers|default([])|sort %}
+{% set peer = tnet_bird_peers[p] %}
+{% set policy = peer.policy | default("tnet") %}
 
+{% if policy == "tnet" %}
 protocol bgp tnet_{{ p }} from tnet_tpl {
   neighbor {{ hostvars[p].tnet_wg[inventory_hostname].address }};
   interface "tnet-{{ p }}";
-{% if tnet_bird_peers[p].rr_client|default(False) %}
+{% if peer.rr_client|default(False) %}
 
   rr client;
 {% endif %}
 }
+{% elif policy == "dn42" %}
+protocol bgp {{ p }} {
+  local    as 4242423538;
+  neighbor {{ peer.address }}
+  neighbor as {{ peer.as }};
+{% if peer.interface is defined %}
+  interface "{{ peer.interface }}";
+{% endif %}
+
+  ipv6 {
+    import filter {
+      if dn42_is_valid_network() && !is_tnet() then {
+        # Check when unknown or invalid according to ROA
+        if (roa_check(dn42_roa, net, bgp_path.last) == ROA_VALID) then {
+          accept;
+        } else {
+          print "[dn42] ROA check failed for ", net, " ASN ", bgp_path.last;
+          reject;
+        }
+      } else {
+        reject;
+      }
+    }
+    export filter {
+      if dn42_is_valid_network() && source ~ [RTS_STATIC, RTS_BGP] then {
+        accept;
+      } else {
+        reject;
+      }
+    }
+  }
+}
+{% endif %}
 {% endfor %}
-- 
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