fix qemu run in subnet

Signed-off-by: GnomeZworc <nicolas.boufidjeline@g3e.fr>

lib/qemu.sh

@@ -4,12 +4,13 @@
 . ./lib/colors.sh
 
 function create_tap {
-    tap_id="${1}"
-    bridge_name="${2}"
+    local tap_id="${1}"
+    local bridge_name="${2}"
+    local vpc_name="${3}"
 
-    ip tuntap add dev "tap${tap_id}" mode tap
-    brctl addif "${bridge_name}" "tap${tap_id}"
-    ip link set up dev "tap${tap_id}"
+    ip -n "${vpc_name}" tuntap add dev "tap${tap_id}" mode tap
+    ip netns exec "${vpc_name}" brctl addif "${bridge_name}" "tap${tap_id}"
+    ip -n "${vpc_name}" link set up dev "tap${tap_id}"
 }
 
 function qemu_start_vm {
@@ -23,10 +24,10 @@ function qemu_start_vm {
     local mac="$(find_mac "${vpc_name}_br-${subnet_id}" "${ip}")"
 
     print_in_color "${COLOR_GREEN}"  "Create tap tap${tap_id}"
-    create_tap "${tap_id}" "br-${subnet_id}"
+    create_tap "${tap_id}" "br-${subnet_id}" "${vpc_name}"
 
     print_in_color "${COLOR_GREEN}"  "Start vm ${vm_name}"
-    qemu-system-x86_64 \
+    ip netns exec "${vpc_name}" qemu-system-x86_64 \
       -enable-kvm \
       -cpu host \
       -m 512 \