slylandro: Use bonding for WiFi/Ethernet

This is mainly because I want to have a seamless transition between
both, at least in theory. Whether this will work out to be so smooth
when trying it on various networks out there remains to be seen, but
let's try it :-)

Signed-off-by: aszlig <aszlig@nix.build>

1 files changed, 17 insertions, 2 deletions

diff --git a/machines/aszlig/slylandro.nix b/machines/aszlig/slylandro.nix
index cb52496f..108910fb 100644
--- a/machines/aszlig/slylandro.nix
+++ b/machines/aszlig/slylandro.nix
@@ -27,8 +27,23 @@
 
   networking.hostName = "slylandro";
   networking.wireless.enable = lib.mkForce true;
-  networking.interfaces.enp1s0.useDHCP = true;
-  networking.interfaces.wlp3s0.useDHCP = true;
+  networking.interfaces.bond0.useDHCP = true;
+
+  # This is because the "primary" option below is only supported for the
+  # scripted networking configuration.
+  systemd.network.networks."40-enp1s0" = {
+    networkConfig.PrimarySlave = true;
+  };
+
+  networking.bonds.bond0 = {
+    interfaces = [ "enp1s0" "wlp3s0" ];
+    driverOptions = {
+      miimon = "1000";
+      mode = "active-backup";
+      primary = "enp1s0";
+      primary_reselect = "always";
+    };
+  };
 
   fileSystems."/boot" = {
     device = "/dev/disk/by-uuid/DF50-CD44";