diff --git a/50-cloud-init.yaml b/50-cloud-init.yaml
new file mode 100644
index 0000000..f09b501
--- /dev/null
+++ b/50-cloud-init.yaml
@@ -0,0 +1,26 @@
+# This file is generated from information provided by the datasource.  Changes
+# to it will not persist across an instance reboot.  To disable cloud-init's
+# network configuration capabilities, write a file
+# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
+# network: {config: disabled}
+network:
+    ethernets:
+        eth0:
+            dhcp4: true
+            dhcp6: false
+            match:
+                macaddress: 00:15:5d:ce:28:e1
+            set-name: eth0
+        eth1:
+            dhcp4: false
+            dhcp6: false
+            match:
+                macaddress: ###ETH1_MAC###
+            set-name: eth1
+
+    bridges:
+        br0:
+          dhcp4: false
+          dhcp6: false
+          interfaces: [eth1]
+    version: 2
diff --git a/Makefile b/Makefile
index 4f3e8c1..55aefe7 100644
--- a/Makefile
+++ b/Makefile
@@ -11,6 +11,9 @@ remove-debian-sources:
 install-il-debian-sources:
 	cp -vf il-sources.list /etc/apt/sources.list.d/il-sources.list
 
+install-iptables-tools:
+	apt install iptables iptstate conntrack iptables-persistent netfilter-persistent -y
+
 install: install-gns3
 
 install-docker:
@@ -104,3 +107,12 @@ get-busy-box-static:
 
 disable-firewalld:
 	systemctl disable --now firewalld
+
+
+fix-cloudinit-netplan-permissions:
+	chmod 600 /etc/netplan/50-cloud-init.yaml
+
+install-default-iptables-persistent-rules:
+	cp -vf rules.v4 /etc/iptables/rules.v4
+	cp -vf rules.v6 /etc/iptables/rules.v6
+
diff --git a/get-ethernet-mac-address.sh b/get-ethernet-mac-address.sh
new file mode 100755
index 0000000..1a8eb32
--- /dev/null
+++ b/get-ethernet-mac-address.sh
@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+
+INTERFACE="$1"
+
+ip -o l show ${INTERCACE} | sed -e "s@.*link\/ether @@g" -e "s@\ brd\ .*@@g"
+
diff --git a/rules.v4 b/rules.v4
new file mode 100644
index 0000000..a119255
--- /dev/null
+++ b/rules.v4
@@ -0,0 +1,35 @@
+# Generated by iptables-save v1.8.9 (nf_tables) on Wed Mar 20 16:29:04 2024
+*mangle
+:PREROUTING ACCEPT [5906:480354]
+:INPUT ACCEPT [5847:469379]
+:FORWARD ACCEPT [0:0]
+:OUTPUT ACCEPT [4269:489003]
+:POSTROUTING ACCEPT [4272:489210]
+COMMIT
+# Completed on Wed Mar 20 16:29:04 2024
+# Generated by iptables-save v1.8.9 (nf_tables) on Wed Mar 20 16:29:04 2024
+*raw
+:PREROUTING ACCEPT [5906:480354]
+:OUTPUT ACCEPT [4269:489003]
+COMMIT
+# Completed on Wed Mar 20 16:29:04 2024
+# Generated by iptables-save v1.8.9 (nf_tables) on Wed Mar 20 16:29:04 2024
+*filter
+:INPUT ACCEPT [4526:358155]
+:FORWARD DROP [0:0]
+:OUTPUT ACCEPT [4269:489003]
+-A INPUT -i lo -j ACCEPT
+-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
+-A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
+-A FORWARD -i br0 -j ACCEPT
+-A FORWARD -o br0 -j ACCEPT
+COMMIT
+# Completed on Wed Mar 20 16:29:04 2024
+# Generated by iptables-save v1.8.9 (nf_tables) on Wed Mar 20 16:29:04 2024
+*nat
+:PREROUTING ACCEPT [17:3221]
+:INPUT ACCEPT [4:772]
+:OUTPUT ACCEPT [0:0]
+:POSTROUTING ACCEPT [0:0]
+COMMIT
+# Completed on Wed Mar 20 16:29:04 2024
diff --git a/rules.v6 b/rules.v6
new file mode 100644
index 0000000..ae84ce4
--- /dev/null
+++ b/rules.v6
@@ -0,0 +1,12 @@
+# Generated by ip6tables-save v1.8.9 (nf_tables) on Wed Mar 20 16:29:00 2024
+*filter
+:INPUT ACCEPT [0:0]
+:FORWARD DROP [0:0]
+:OUTPUT ACCEPT [0:0]
+-A INPUT -i lo -j ACCEPT
+-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
+-A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
+-A FORWARD -i br0 -j ACCEPT
+-A FORWARD -o br0 -j ACCEPT
+COMMIT
+# Completed on Wed Mar 20 16:29:00 2024