From 4198653fd60cf51a2f3837bc23b7106a1c74db2a Mon Sep 17 00:00:00 2001
From: clerie <git@clerie.de>
Date: Tue, 15 Dec 2020 17:55:02 +0100
Subject: [PATCH] Add link local wireguard helper methods

---
 lib/link-local-wireguard.nix | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 lib/link-local-wireguard.nix

diff --git a/lib/link-local-wireguard.nix b/lib/link-local-wireguard.nix
new file mode 100644
index 0000000..5361203
--- /dev/null
+++ b/lib/link-local-wireguard.nix
@@ -0,0 +1,22 @@
+{ ... }:
+
+rec {
+  llIPv6 = localIP: peerIP: interface: {
+    ips = [
+      "${localIP}/128"
+    ];
+    postSetup = ''
+    ip -6 route flush dev ${interface}
+    ip addr del dev ${interface} ${localIP}/128 && ip addr add dev ${interface} ${localIP}/128 peer ${peerIP}/128
+    '';
+  };
+  llIPv4 = localIP: peerIP: interface: {
+    ips = [
+      "${localIP}/32"
+    ];
+    postSetup = ''
+    ip -4 route flush dev ${interface}
+    ip addr del dev ${interface} ${localIP}/32 && ip addr add dev ${interface} ${localIP}/32 peer ${peerIP}/32
+    '';
+  };
+}