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neutron network dnsmasq not reachable behind bridge

asked 2013-11-06 11:29:04 -0600

linuxmonk gravatar image

updated 2014-01-22 15:12:45 -0600

Evgeny gravatar image

Am trying to setup an Neutron network environment that would allow my client machines be able to PXE boot using neutron DHCP PXE support.

  • I setup neutron with DHCP and PXE + TFTP options in my controller node.
  • I created a neutron network and a subnet.
  • I see that neutron created the network and the DNSMASQ is running under a namespace on a TAP interface under the OVS integration bridge.
  • To test this I run a dhclient from one of my client VMs and the client machine/VM don't get an IP.

However if I manually run a dnsmasq directly on my controller's NIC outside the integration bridge my clients can get an IP. The moment I attach the interface to a bridge my client machines can no longer communicate with the dnsmasq running on the interface. Can someone point out what am I missing ?

I also tried the following --

  • Assigning the integration bridge (br-int) a static IP in the subnet range as TAP interface.
  • Adding default gateway for bridge IP.
  • Adding default gateway for interface IP.
  • Disabling IP tables fully.

None of these seem to help.

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answered 2013-11-13 05:21:48 -0600

azpekt gravatar image

I`m also impacted by this issue.

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Me too. I suppose you must create everything inside the integration network so they can be reached.

gadLinux gravatar imagegadLinux ( 2014-01-23 12:19:48 -0600 )edit

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Asked: 2013-11-06 11:29:04 -0600

Seen: 430 times

Last updated: Nov 13 '13