From 92f8103c6a0342082040664586e93edf3d3aa6cc Mon Sep 17 00:00:00 2001
From: Astro <astro@spaceboyz.net>
Date: Wed, 13 Jul 2022 22:44:28 +0200
Subject: [PATCH] modules/microvm: add stopTuntap to nomad jobs

---
 modules/microvm.nix | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/modules/microvm.nix b/modules/microvm.nix
index 3e0fa0c6..83d9c2a8 100644
--- a/modules/microvm.nix
+++ b/modules/microvm.nix
@@ -96,6 +96,13 @@ in
               ip tuntap add ${id} mode tap user microvm
             fi
           '';
+        stopTuntap = { id, ... }:
+          pkgs.writeScript "tuntap-${hostName}-${id}" ''
+            #!${pkgs.runtimeShell} -e
+            if [ -d /sys/class/net/${id} ]; then
+              ip tuntap del ${id} mode tap
+            fi
+          '';
         # change working directory before starting virtiofsd
         runVirtiofsd = { tag, socket, source, ... }:
           pkgs.writeScript "virtiofsd-${hostName}-${tag}" ''
@@ -137,6 +144,16 @@ in
                   command = "${runTuntap interface}"
                 }
               }
+              task "interface-${id}-stop" {
+                lifecycle {
+                  hook = "poststop"
+                }
+                driver = "raw_exec"
+                user = "root"
+                config {
+                  command = "${stopTuntap interface}"
+                }
+              }
             '') config.microvm.interfaces}
 
             ${lib.concatMapStrings (share@{ tag, ... }: ''