services/router: init

2026-09-17 08:57:32 +07:00
parent b85d6637f1
commit 60aac6efb2
39 changed files with 1831 additions and 929 deletions
@@ -0,0 +1,22 @@
+# IPv6 on the PPPoE uplink: run networkd's DHCPv6 client on ppp0 to obtain a
+# delegated prefix; each vlan-* interface (network.nix) carves a /64 out of it
+# via DHCPPrefixDelegation and announces it to clients with SLAAC.
+{ lib, ... }:
+{
+  systemd.network.networks."45-ppp0" = {
+    matchConfig.Name = "ppp0";
+    networkConfig = {
+      DHCP = "ipv6";
+      # pppd owns the v4 address/route on this link; don't let networkd
+      # tear them down.
+      KeepConfiguration = "static";
+      # Default v6 route comes from the ISP's RA when they send one.
+      IPv6AcceptRA = true;
+    };
+    # Many PPPoE ISPs never send an RA with the M flag; solicit regardless.
+    dhcpV6Config.WithoutRA = "solicit";
+    linkConfig.RequiredForOnline = "no";
+  };
+
+  boot.kernel.sysctl."net.ipv6.conf.all.forwarding" = lib.mkDefault 1;
+}