neutron net-create external -- \
--router:external=True \
--provider:network_type vlan \
--provider:physical_network physnet1 \
--provider:segmentation_id 2
neutron subnet-create external \
--allocation-pool start=134.60.64.21,end=134.60.64.240 \
--gateway=134.60.64.1 --enable_dhcp=False \
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