From 9bc15fd531da793bc2f15a486c40351974bd3f85 Mon Sep 17 00:00:00 2001
From: Alejandro Soto <alejandro@34project.org>
Date: Sat, 18 Jan 2025 13:36:50 -0600
Subject: sys: remove IPv4 on dmz, gate; enable DNS64 for dmz

---
 sys/nspawn/dmz.nix | 57 +++++++++++++++++++++---------------------------------
 1 file changed, 22 insertions(+), 35 deletions(-)

(limited to 'sys/nspawn')

diff --git a/sys/nspawn/dmz.nix b/sys/nspawn/dmz.nix
index 905e491..52b588c 100644
--- a/sys/nspawn/dmz.nix
+++ b/sys/nspawn/dmz.nix
@@ -12,13 +12,12 @@ in
   options.local.nspawn.dmz = {
     enable = mkEnableOption "DMZ services in a container";
 
-    netName = mkOption {
+    dns64 = mkOption {
       type = types.str;
     };
 
-    net = mkOption {
+    netName = mkOption {
       type = types.str;
-      readOnly = true;
     };
 
     net6 = mkOption {
@@ -26,16 +25,6 @@ in
       readOnly = true;
     };
 
-    dmzAddr = mkOption {
-      type = types.str;
-      readOnly = true;
-    };
-
-    hostAddr = mkOption {
-      type = types.str;
-      readOnly = true;
-    };
-
     hostAddr6 = mkOption {
       type = types.str;
       readOnly = true;
@@ -66,11 +55,9 @@ in
 
   config = mkIf cfg.enable {
     local = {
-      mailHost.mdaListen = cfg.hostAddr;
+      mailHost.mdaListen = cfg.hostAddr6;
 
       nspawn.dmz = {
-        dmzAddr = dmzNet.hosts.dmz.v4.address;
-        hostAddr = dmzNet.hosts.gateway.v4.address;
         hostAddr6 = dmzNet.hosts.gateway.v6.address;
 
         system =
@@ -85,14 +72,14 @@ in
                   };
 
                   mta = {
-                    mdaAddr = mailHost.mdaListen;
+                    mdaAddr = "[${mailHost.mdaListen}]";
                     inherit (mailHost) saslPort lmtpPort;
                   };
 
                   web.sites = {
                     home = {
                       enable = hassEnable;
-                      proxyUrl = "http://${cfg.hostAddr}:${toString hassPort}";
+                      proxyUrl = "http://[${cfg.hostAddr6}]:${toString hassPort}";
                     };
                   };
                 };
@@ -117,17 +104,23 @@ in
                   name = "host0";
 
                   networkConfig = {
-                    DHCP = "ipv4";
+                    DNS = [ cfg.dns64 ];
+
+                    DHCP = "no";
                     IPv6AcceptRA = "yes";
                     LinkLocalAddressing = "ipv6";
                   };
 
-                  ipv6AcceptRAConfig.Token = [
-                    "static:${dmzNet.hosts.dmz.v6.address}"
-                    "eui64"
-                    "static:${dmzNet.hosts.mta.v6.address}"
-                    "static:${dmzNet.hosts.web.v6.address}"
-                  ];
+                  ipv6AcceptRAConfig = {
+                    Token = [
+                      "static:::${dmzNet.hosts.dmz.v6.suffix}"
+                      "eui64"
+                      "static:::${dmzNet.hosts.mta.v6.suffix}"
+                      "static:::${dmzNet.hosts.web.v6.suffix}"
+                    ];
+
+                    UseDNS = false;
+                  };
                 };
               };
             };
@@ -147,8 +140,8 @@ in
 
     services = {
       home-assistant.config.http = mkIf hassEnable {
-        server_host = [ cfg.hostAddr ];
-        trusted_proxies = [ cfg.dmzAddr ];
+        server_host = [ cfg.hostAddr6 ];
+        trusted_proxies = [ dmzNet.hosts.web.v6.address ];
         use_x_forwarded_for = true;
       };
     };
@@ -172,21 +165,15 @@ in
         };
 
         networkConfig = {
-          Address = [ dmzNet.hosts.gateway.v4.cidr dmzNet.hosts.gateway.v6.cidr ];
+          Address = [ dmzNet.hosts.gateway.v6.cidr ];
           LinkLocalAddressing = "yes";
-          DHCPServer = "yes";
+          DHCPServer = "no";
           IPMasquerade = "no";
           LLDP = "yes";
           EmitLLDP = "customer-bridge";
           IPv6SendRA = "yes";
         };
 
-        # IP de contenedor fijada en hostAddr + 1
-        dhcpServerConfig = {
-          PoolOffset = 2;
-          PoolSize = 1;
-        };
-
         ipv6Prefixes = [
           {
             Assign = "yes";
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