ONE/Simple test setup
From fd.io
# create namespace and set up interface in linux
ip netns add vpp1
ip link set dev vpp1 up
ip link set dev veth_vpp1 up netns vpp1
ip netns exec vpp1 \
bash -c "
ip link set dev lo up
ip addr add 172.16.1.2/24 dev veth_vpp1
ip route add 172.16.2.0/24 via 172.16.1.1
"