fix bmc dhcp

common/base-server.nix

@@ -33,4 +33,21 @@
   boot.kernelParams = [
     "panic=30" "boot.panic_on_fail"
   ];
+
+  boot.kernel.sysctl = {
+    # Set default TCP congestion control algorithm
+    "net.ipv4.tcp_congestion_control" = "bbr";
+
+    # Enable ECN
+    "net.ipv4.tcp_ecn" = 1;
+
+    # Enable TCP fast open
+    "net.ipv4.tcp_fastopen" = 3;
+  };
+
+  # reduce closure size, feel free to add your locale here
+  i18n.supportedLocales = [
+    "en_US.UTF-8/UTF-8"
+    "fr_FR.UTF-8/UTF-8"
+  ];
 }

hosts/bagel-box/default.nix

@@ -39,8 +39,8 @@
 
     hydra.enable = true;
     hydra.dbi = "dbi:Pg:dbname=hydra;user=hydra";
-    # Takes 10 builders (0 → 9).
+    # Takes 4 builders (0 → 3).
-    hydra.builders = lib.genList (i: "builder-${builtins.toString i}") 9;
+    hydra.builders = lib.genList (i: "builder-${builtins.toString i}") 4;
 
     ofborg.enable = true;
   };

hosts/wob-vpn-gw/default.nix

@@ -86,6 +86,11 @@
     }) (lib.genList lib.id 12));
   };
 
+  networking.nftables.enable = true;
+  networking.firewall.extraInputRules = ''
+    iifname { "bmc*" } meta nfproto ipv4 udp dport 67 accept comment "DHCP server"
+  '';
+
   networking.vlans = lib.listToAttrs (map (x: lib.nameValuePair "bmc${toString x}" {
     interface = "oob";
     id = 101 + x;