Comment 6 for bug 1317363

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Felipe Alfaro Solana (felipe-alfaro-gmail) wrote :

As far as I know, the CLI error "Gateway is not valid on subnet" usually happens when Neutron is configured to force the gateway to be on the same network it's serving but the gateway specified when creating or updating a subnet lies outside that IP network.

This behavior is controlled by means of the force_gateway_on_subnet setting in /etc/neutron/neutron.conf. In Havana, I think the default used to be False, but the default has been changed to True in Icehouse, I believe.