clean_netns.sh

#!/bin/env bash

# Down
sudo ip link set veth0-rimnet down
sudo ip link set veth0-rimnet-br down
sudo ip netns exec rimnet_1 ip link set veth1-rimnet down
sudo ip netns exec rimnet_2 ip link set veth2-rimnet down
sudo ip link set veth1-rimnet-br down
sudo ip link set veth2-rimnet-br down
sudo ip link set br-rimnet down

# Clean the bridge from host to rimnet_1
sudo ip link delete br-rimnet

# Clean veth peer
sudo ip link delete veth0-rimnet
sudo ip netns exec rimnet_1 sudo ip link delete veth1-rimnet
sudo ip netns exec rimnet_2 sudo ip link delete veth2-rimnet

# Clean network namespace
sudo ip netns del rimnet_1
sudo ip netns del rimnet_2

# Configure routing
sudo iptables -t nat -D POSTROUTING -s 10.0.254.0/24 -j MASQUERADE
sudo iptables -t filter -D FORWARD -d 10.0.254.0/24 -j ACCEPT

# Configure firewall
if ! command -v firewall-cmd &> /dev/null
then
    exit
fi

firewall-cmd --remove-port=7891/udp