----- Original Message ----- From: "Dong Liu" <willowd878 at gmail.com> To: "Nir Yechiel" <nyechiel at redhat.com> Cc: "OpenStack Development Mailing List (not for usage questions)" <openstack-dev at lists.openstack.org> Sent: Wednesday, January 8, 2014 5:36:14 PM Subject: Re: [neutron] Implement NAPT in neutron (https://blueprints.launchpad.net/neutron/+spec/neutron-napt-api) 在 2014年1月8日，20:24，Nir Yechiel < nyechiel at redhat.com > 写道： Hi Dong, Can you please clarify this blueprint? Currently in Neutron, If an instance has a floating IP, then that will be used for both inbound and outbound traffic. If an instance does not have a floating IP, it can make connections out using the gateway IP (SNAT using PAT/NAT Overload). Does the idea in this blueprint is to implement PAT on both directions using only the gateway IP? Also, did you see this one [1]? Thanks, Nir [1] https://blueprints.launchpad.net/neutron/+spec/router-port-forwarding I think my ide a is duplicated with this one. https://blueprints.launchpad.net/neutron/+spec/access-vms-via-port-mapping Sorry for missing this. [Nir] Thanks, I wasn't familiar with this one. So is there a difference between those three? https://blueprints.launchpad.net/neutron/+spec/router-port-forwarding https://blueprints.launchpad.net/neutron/+spec/access-vms-via-port-mapping https://blueprints.launchpad.net/neutron/+spec/neutron-napt-api Looks like all of them are trying to solve the same challenge using the public gateway IP and PAT. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20140109/0df56e3e/attachment.html>