[root@openstackctrl ~(keystone_admin)]# ip netns list
qdhcp-97789187-d4df-44a8-94a2-3811df908232
qrouter-93e58c4c-8117-4303-8509-7cbbeb4226c1
qdhcp-cb6173a4-fc6f-4a26-9a19-8d4b7057155d
[root@openstackctrl ~(keystone_admin)]# ip netns exec qdhcp-97789187-d4df-44a8-94a2-3811df908232 ps aux | grep dnsmasq
nobody    2829  0.0  0.0  12892   552 ?        S    Apr29   0:26 /usr/sbin/dnsmasq --strict-order --pid-file=/var/run/libvirt/network/default.pid --conf-file= --except-interface lo --bind-interfaces --listen-address 192.168.122.1 --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override --dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile --addn-hosts=/var/lib/libvirt/dnsmasq/default.addnhosts
root      6433  0.0  0.0 103256   816 pts/1    S+   16:14   0:00 grep dnsmasq
nobody   32258  0.0  0.0  12888   612 ?        S    15:50   0:00 dnsmasq --no-hosts --no-resolv --strict-order --bind-interfaces --interface=tap20c9b3b8-d6 --except-interface=lo --pid-file=/var/lib/neutron/dhcp/cb6173a4-fc6f-4a26-9a19-8d4b7057155d/pid --dhcp-hostsfile=/var/lib/neutron/dhcp/cb6173a4-fc6f-4a26-9a19-8d4b7057155d/host --dhcp-optsfile=/var/lib/neutron/dhcp/cb6173a4-fc6f-4a26-9a19-8d4b7057155d/opts --leasefile-ro --dhcp-range=tag0,10.0.0.0,static,120s --dhcp-lease-max=256 --conf-file= --domain=openstacklocal
nobody   32291  0.0  0.0  12888   576 ?        S    15:50   0:00 dnsmasq --no-hosts --no-resolv --strict-order --bind-interfaces --interface=tapf94a34f6-ba --except-interface=lo --pid-file=/var/lib/neutron/dhcp/97789187-d4df-44a8-94a2-3811df908232/pid --dhcp-hostsfile=/var/lib/neutron/dhcp/97789187-d4df-44a8-94a2-3811df908232/host --dhcp-optsfile=/var/lib/neutron/dhcp/97789187-d4df-44a8-94a2-3811df908232/opts --leasefile-ro --dhcp-range=tag0,129.0.0.0,static,120s --dhcp-lease-max=65536 --conf-file= --domain=openstacklocal