network: Fix mashu's IP

lib/network.nix

@@ -4,7 +4,6 @@ rec {
   # A collection of IP addresses for various uses
   miku = "${network-base}.38";
   nishimiya = "${network-base}.21";
-  #ayame = "${network-base}.35"; # TODO: That one's wrong
   tamaki = "${network-base}.27";
-  mashu = "${network-base}.52"; # TODO: That's wrong
+  mashu = "${network-base}.54";
 }