From 0410f5dff9ff952bfe129e522933c4c4ef6b3815 Mon Sep 17 00:00:00 2001
From: Bas van Dijk <v.dijk.bas@gmail.com>
Date: Mon, 20 Apr 2020 12:01:24 +0200
Subject: nixos/tests: support up to 255 nodes in NixOS tests

---
 nixos/lib/qemu-flags.nix | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/nixos/lib/qemu-flags.nix b/nixos/lib/qemu-flags.nix
index 859d9e975fec..b310914d36cc 100644
--- a/nixos/lib/qemu-flags.nix
+++ b/nixos/lib/qemu-flags.nix
@@ -2,7 +2,11 @@
 { pkgs }:
 
 let
-  zeroPad = n: if n < 10 then "0${toString n}" else toString n;
+  zeroPad = n:
+    pkgs.lib.optionalString (n < 16) "0" +
+      (if n > 255
+       then throw "Can't have more than 255 nets or nodes!"
+       else pkgs.lib.toHex n);
 in
 
 {
-- 
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