router: drop imgur WireGuard tunnel

common.nix

@@ -38,7 +38,6 @@
     ./services/shelfarr.nix
     ./services/adguard.nix
     ./services/router.nix
-    ./services/imgur-vpn.nix
     ./services/crowdsec.nix
     ./services/service-health.nix
     ./services/sabnzbd.nix

services/imgur-vpn.nix

@@ -1,74 +0,0 @@
-# services/imgur-vpn.nix — route imgur out a WireGuard tunnel, network-wide
-#
-# imgur geo-blocks UK IPs, so LAN clients need a non-UK exit for imgur only.
-# imgur.com / i.imgur.com / api.imgur.com all resolve to two Fastly anycast
-# /24s; we send just those prefixes down the tunnel and leave everything else
-# on eno1.
-#
-# ponytail: static prefixes, not a DNS-driven nftset. Other Fastly customers
-# sharing these /24s ride the tunnel too — harmless, just a longer path. If
-# that ever matters, add dnsmasq `nftset=` + fwmark policy routing instead.
-#
-# Setup (one-off, on the mediaserver):
-#   1. Fill in peerPublicKey / peerEndpoint / tunnelAddress below from your
-#      VPN provider's WireGuard config (pick a non-UK exit).
-#   2. Write the private key, no trailing newline, readable by systemd-network:
-#        install -m600 -o systemd-network -g systemd-network \
-#          /dev/stdin /var/secrets/wg-imgur.key <<< '<PRIVATE_KEY>'
-#   3. Rebuild. Verify:  curl --interface wg-imgur https://api.imgur.com/
-{ config, lib, ... }:
-let
-  # --- provider details: fill these in ---
-  peerPublicKey = "@PEER_PUBLIC_KEY@";
-  peerEndpoint  = "@HOST_OR_IP@:51820";
-  tunnelAddress = "@TUNNEL_IP@/32";   # address the provider assigned us
-
-  # imgur's Fastly anycast prefixes.
-  imgurNets = [ "199.232.192.0/24" "199.232.196.0/24" ];
-in
-{
-  config = lib.mkIf (config.networking.hostName == "FredOS-Mediaserver") {
-
-    systemd.network = {
-      netdevs."30-wg-imgur" = {
-        netdevConfig = {
-          Name = "wg-imgur";
-          Kind = "wireguard";
-        };
-        # Key read at runtime — keeps flake eval pure (hosts build from Forgejo).
-        wireguardConfig.PrivateKeyFile = "/var/secrets/wg-imgur.key";
-        wireguardPeers = [{
-          PublicKey = peerPublicKey;
-          Endpoint = peerEndpoint;
-          # Doubles as the tunnel's crypto-routing scope: only imgur goes in.
-          AllowedIPs = imgurNets;
-          PersistentKeepalive = 25;
-        }];
-      };
-
-      networks."30-wg-imgur" = {
-        matchConfig.Name = "wg-imgur";
-        address = [ tunnelAddress ];
-        # Plain main-table routes: destination-based, so no fwmark/ip-rule
-        # machinery and no rp_filter breakage on the reply path.
-        routes = map (n: { Destination = n; }) imgurNets;
-        linkConfig.RequiredForOnline = "no";
-      };
-    };
-
-    # LAN sources must be NAT'd to the tunnel address, and TCP MSS clamped —
-    # the tunnel's 1420 MTU otherwise black-holes full-size segments.
-    networking.nftables.tables.router-nat.content = lib.mkAfter ''
-      chain wg_imgur_postrouting {
-        type nat hook postrouting priority 101; policy accept;
-        oifname "wg-imgur" masquerade
-      }
-    '';
-    networking.nftables.tables.filter.content = lib.mkAfter ''
-      chain wg_imgur_mss {
-        type filter hook forward priority 0; policy accept;
-        oifname "wg-imgur" tcp flags syn tcp option maxseg size set rt mtu
-      }
-    '';
-  };
-}