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2014-09-30 04:31:30 -0500 commented answer VMs not accessable using Floating-ip(Stderr: 'ovs-ofctl: -1: negative values not supported for in_port\n')

Finally I found this post: http://bizzard2000.wordpress.com/2014/06/ (http://bizzard2000.wordpress.com/2014...)

Need to upgrade Centos kernel to support GRE tunneling. Issue closed!

Thanks Bizzard :-)

2014-09-30 00:10:11 -0500 commented answer Instance unable to get ip from dhcp. (Havana with neutron gre)

Some people said to install openvswitch-datapath-dkms, but I'm using CentOS. Openvswitch version 1.11 is not really old, because I see some people deployed successfully with OVS 1.10.

I don't know how to fix this issue. Any help?

2014-09-29 23:24:15 -0500 answered a question VMs not accessable using Floating-ip(Stderr: 'ovs-ofctl: -1: negative values not supported for in_port\n')

I see several posts related to this issue but noone replied. I'm facing the same issue. Has anyone resolved it?

2014-09-29 23:23:21 -0500 answered a question Instance unable to get ip from dhcp. (Havana with neutron gre)

Hi, I got the same issue. I'm using Centos 6.4 64bit & Openstack Havana.

"Stderr: 'ovs-ofctl: -1: negative values not supported for in_port\n'"

Can anyone solve this problem?