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2 dnsmasq processes. Is it a concern?

My nova installation is working fine but I'm quite bothered by an observation: there are always 2 dnsmasq processes running at the same time, one being the sub-process of the other:

ps -ef | grep dns

nobody 11435 1 0 06:09 ? 00:00:00 dnsmasq --strict-order --bind-interfaces --conf-file= --domain=novalocal --pid-file=/var/lib/nova/networks/nova-br100.pid --listen-address=172.16.0.4 --except-interface=lo --dhcp-range=172.16.0.3,static,120s --dhcp-lease-max=256 --dhcp-hostsfile=/var/lib/nova/networks/nova-br100.conf --dhcp-script=/usr/bin/nova-dhcpbridge --leasefile-ro root 11436 11435 0 06:09 ? 00:00:00 dnsmasq --strict-order --bind-interfaces --conf-file= --domain=novalocal --pid-file=/var/lib/nova/networks/nova-br100.pid --listen-address=172.16.0.4 --except-interface=lo --dhcp-range=172.16.0.3,static,120s --dhcp-lease-max=256 --dhcp-hostsfile=/var/lib/nova/networks/nova-br100.conf --dhcp-script=/usr/bin/nova-dhcpbridge --leasefile-ro

I tried "killall dnsmasq; service nova-network restart" numerous times and the observation remained.

Nova admin guide states this as a problem that will prevent VMs from receiving IP addresses. I also experienced failed DHCP handshake with a Windows VM which I suspect is related with 2 dnsmasq proceses (see my previous question: https://answers.launchpad.net/nova/+question/167297).

So my questions are: - Is it possible that 2 dnsmasq processes will cause sporadic DHCP handshake failure? - If so, what can I do to fix it?

Again your help is highly appreciated! Kenneth