diff --git a/debian/patches/pve/0013-postinst-reload-network-config-on-first-install.patch b/debian/patches/pve/0013-postinst-reload-network-config-on-first-install.patch
new file mode 100644
index 0000000..25c6851
--- /dev/null
+++ b/debian/patches/pve/0013-postinst-reload-network-config-on-first-install.patch
@@ -0,0 +1,26 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Dominik Csapak <d.csapak@proxmox.com>
+Date: Tue, 6 Jul 2021 13:11:24 +0200
+Subject: [PATCH] postinst: reload network config on first install
+
+Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
+---
+ debian/ifupdown2.postinst | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/debian/ifupdown2.postinst b/debian/ifupdown2.postinst
+index b7de485..eaade7c 100644
+--- a/debian/ifupdown2.postinst
++++ b/debian/ifupdown2.postinst
+@@ -113,6 +113,8 @@ case "$1" in
+         postinst_remove_diverts
+         if [ -f "/tmp/.ifupdown2-first-install" ]; then
+             proxmox_compatibility
++            echo "Reloading network config on first install"
++            ifreload -a
+             rm  /tmp/.ifupdown2-first-install
+         fi
+     ;;
+-- 
+2.30.2
+
diff --git a/debian/patches/series b/debian/patches/series
index 2cb57a0..c8bcffb 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -10,3 +10,4 @@ pve/0009-allow-vlan-tag-inside-vxlan-tunnel.patch
 pve/0010-postinst-rm-update-network-config-compatibility.patch
 pve/0011-d-rules-drop-now-default-with-systemd.patch
 pve/0012-d-rules-add-dh_installsystemd-override-for-compat-12.patch
+pve/0013-postinst-reload-network-config-on-first-install.patch