From 30a24ef6dd91590060fb95c59d5e1ef267b73b1d Mon Sep 17 00:00:00 2001
From: Trygve Laugstøl <trygvis@inamo.no>
Date: Sun, 18 Aug 2024 08:10:00 +0200
Subject: tnet += conflatorio

---
 ansible/inventory                         |  1 +
 tnet/files/conflatorio/bird-tnet-pre.conf | 21 ++++++++++++++
 tnet/files/conflatorio/bird-tnet.conf     | 48 +++++++++++++++++++++++++++++++
 3 files changed, 70 insertions(+)
 create mode 100644 tnet/files/conflatorio/bird-tnet-pre.conf
 create mode 100644 tnet/files/conflatorio/bird-tnet.conf

diff --git a/ansible/inventory b/ansible/inventory
index b81bc5b..9b89ace 100644
--- a/ansible/inventory
+++ b/ansible/inventory
@@ -190,6 +190,7 @@ all:
       hosts:
         akili:
         astyanax:
+        conflatorio:
         hash:
         knot:
         lhn2pi:
diff --git a/tnet/files/conflatorio/bird-tnet-pre.conf b/tnet/files/conflatorio/bird-tnet-pre.conf
new file mode 100644
index 0000000..383c050
--- /dev/null
+++ b/tnet/files/conflatorio/bird-tnet-pre.conf
@@ -0,0 +1,21 @@
+define tnet = fdb1:4242:3538::/48;
+define tnet_router = fdb1:4242:3538:ffff::/64;
+
+function is_tnet() # -> bool
+{
+  return net ~ tnet && (net !~ tnet_router);
+}
+
+roa6 table dn42_roa;
+
+protocol static {
+    roa6 { table dn42_roa; };
+    include "/etc/bird/dn42_roa_bird2_6.conf";
+};
+
+function dn42_is_valid_network() # -> bool
+{
+  return net ~ [
+    fd00::/8{44,64} # ULA address space as per RFC 4193
+  ];
+}
diff --git a/tnet/files/conflatorio/bird-tnet.conf b/tnet/files/conflatorio/bird-tnet.conf
new file mode 100644
index 0000000..02780a6
--- /dev/null
+++ b/tnet/files/conflatorio/bird-tnet.conf
@@ -0,0 +1,48 @@
+# Set to true if this peer is directly connected to a dn42 peer
+define is_dn42_peer = true;
+# If we are connected directly to dn42, we don't want the dn42 routes from others
+define import_dn42 = !is_dn42_peer;
+define export_dn42 = is_dn42_peer;
+
+template bgp tnet_tpl {
+  local    as 4242423538;
+  neighbor internal;
+
+  direct;
+
+  password "trygvis";
+
+  ipv6 {
+    next hop self;
+    import filter {
+      if is_tnet() then {
+        accept proto, ": (tnet) import accept, net=", net, ", from=", from, ", gw=", gw;
+      } else if import_dn42 && dn42_is_valid_network() then {
+        accept proto, ": (dn42) import accept, net=", net, ", from=", from, ", gw=", gw;
+      } else {
+        reject proto, ": import reject, reason=not tnet";
+      }
+    };
+    # newer bird's only
+    # import keep filtered;
+    export filter {
+      if is_tnet() then {
+        accept proto, ": (tnet) export accept, net=", net, ", from=", from, ", gw=", gw;
+      } else if export_dn42 && dn42_is_valid_network() then {
+        accept proto, ": (dn42) import accept, net=", net, ", from=", from, ", gw=", gw;
+      } else {
+        reject proto, ": export reject, reason=not tnet";
+      }
+    };
+  };
+}
+
+protocol bgp tnet_hash from tnet_tpl {
+  neighbor fe80:4540:476c:d432:2f32:818b:811b:bb61;
+  interface "tnet-hash";
+}
+
+protocol bgp tnet_knot from tnet_tpl {
+  neighbor fe80:47fc:0660:b91f:1063:a6ae:46bb:7589;
+  interface "tnet-knot";
+}
-- 
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