Add downscript to fix free_machine targets

images/Dockerfile.vms

@@ -3,6 +3,7 @@ FROM docker.io/library/debian:bookworm-backports
 RUN apt update && \
     apt-get --no-install-recommends install --yes \
         iproute2 \
+        procps \
         python3 \
         qemu-utils \
         qemu-system-x86 \

scripts/manage_vms.py

@@ -98,7 +98,7 @@ def _kill_vm_process(machine_uuid):
                 return
 
             pid = fields[0]
-            os.kill(int(pid), signal.SIGKILL)
+            os.kill(int(pid), signal.SIGTERM)
 
 
     @staticmethod
@@ -139,7 +139,7 @@ def _start_vm(machine):
             cmd.append('-device')
             cmd.append(f'virtio-net-pci,netdev=hn{i},mac={mac},romfile=')
             cmd.append(f'-netdev')
-            cmd.append(f'tap,id=hn{i},ifname=tap{i},script=/mini-lab/mirror_tap_to_lan.sh,downscript=no')
+            cmd.append(f'tap,id=hn{i},ifname=tap{i},script=/mini-lab/mirror_tap_to_lan.sh,downscript=/mini-lab/remove_mirror.sh')
 
         cmd.append("&")
 

scripts/remove_mirror.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+# Script is taken from https://netdevops.me/2021/transparently-redirecting-packetsframes-between-interfaces/
+# Read it for better understanding
+
+set -o errexit
+
+TAP_IF=$1
+# get interface index number up to 3 digits (everything after first three chars)
+# tap0 -> 0
+# tap123 -> 123
+INDEX=${TAP_IF:3:3}
+
+tc qdisc del dev $TAP_IF ingress
+tc qdisc del dev lan$INDEX ingress