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net_namespaces.txt
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net_namespaces.txt
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ip netns add int_ns
ip link add v-eth-int type veth peer name v-peer-int
ip link set v-peer-int netns int_ns
ip addr add 192.168.9.50/24 dev v-eth-int
ip link set v-eth-int up
ip netns exec int_ns ip addr add 192.168.9.51/24 dev v-peer-int
ip netns exec int_ns ip link set v-peer-int up
ip netns exec int_ns ip route add default via 192.168.9.50
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -P FORWARD DROP
iptables -F FORWARD
iptables -t nat -F
iptables -t nat -A POSTROUTING -s 192.168.9.0/255.255.255.0 -o wlp5s0 -j MASQUERADE
iptables -A FORWARD -i wlp5s0 -o v-eth-int -j ACCEPT
iptables -A FORWARD -o wlp5s0 -i v-eth-int -j ACCEPT
ip netns add ext_ns
ip link add v-eth-ext type veth peer name v-peer-ext
ip link set v-peer-ext netns ext_ns
ip addr add 192.168.8.50/24 dev v-eth-ext
ip link set v-eth-ext up
ip netns exec ext_ns ip addr add 192.168.8.51/24 dev v-peer-ext
ip netns exec ext_ns ip link set v-peer-ext up
ip netns exec ext_ns ip route add default via 192.168.8.50
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -P FORWARD DROP
iptables -F FORWARD
iptables -t nat -F
iptables -t nat -A POSTROUTING -s 192.168.8.0/255.255.255.0 -o wlp5s0 -j MASQUERADE
iptables -A FORWARD -i wlx08beac00da30 -o v-eth-ext -j ACCEPT
iptables -A FORWARD -o wlx08beac00da30 -i v-eth-ext -j ACCEPT