namespace.txt

ip netns add ce-3-1
ip link set eth2 netns ce-3-1
ip netns exec ce-3-1 ip a
ip netns exec ce-3-1 vconfig add eth2 100
ip netns exec ce-3-1 ifconfig eth2 up
ip netns exec ce-3-1 ifconfig eth2.100 inet 10.11.12.3 netmask 255.255.255.0 up
ip netns exec ce-3-1 ifconfig eth2.100 up
ip netns exec ce-3-1 ip route add default via 10.11.12.103
ip netns exec ce-3-1 ip link set dev lo up

ip netns add ce-7-1
ip link set eth4 netns ce-7-1
ip netns exec ce-7-1 ip a
ip netns exec ce-7-1 vconfig add eth4 100
ip netns exec ce-7-1 ifconfig eth4 up
ip netns exec ce-7-1 ifconfig eth4.100 inet 10.11.12.7 netmask 255.255.255.0 up
ip netns exec ce-7-1 ifconfig eth4.100 up
ip netns exec ce-7-1 ip route add default via 10.11.12.101
ip netns exec ce-7-1 ip link set dev lo up

ip netns add ce-9-1
ip link set eth5 netns ce-9-1
ip netns exec ce-9-1 ip a
ip netns exec ce-9-1 vconfig add eth5 100
ip netns exec ce-9-1 ifconfig eth5 up
ip netns exec ce-9-1 ifconfig eth5.100 inet 10.11.12.9 netmask 255.255.255.0 up
ip netns exec ce-9-1 ifconfig eth5.100 up
ip netns exec ce-9-1 ip route add default via 10.11.12.101
ip netns exec ce-9-1 ip link set dev lo up