)]}'
{"/PATCHSET_LEVEL":[{"author":{"_account_id":1131,"name":"Brian Haley","email":"haleyb.dev@gmail.com","username":"brian-haley"},"change_message_id":"82215a98fe077651fbe6b54a286e34c24e3e8102","unresolved":false,"context_lines":[],"source_content_type":"","patch_set":1,"id":"9b799628_0316e855","updated":"2023-11-03 18:53:07.000000000","message":"I am going to merge this with https://review.opendev.org/c/openstack/neutron/+/892839 so we can try and get something merged.","commit_id":"26edab5028422678180d418f945bf7112008edd8"}],"doc/source/ovn/gaps.rst":[{"author":{"_account_id":13252,"name":"Dr. Jens Harbott","display_name":"Jens Harbott (frickler)","email":"frickler@offenerstapel.de","username":"jrosenboom"},"change_message_id":"826e000bef85aa534ce914ecb33d0d69d8e2640b","unresolved":true,"context_lines":[{"line_number":74,"context_line":"* MTU fragmentation between private networks."},{"line_number":75,"context_line":""},{"line_number":76,"context_line":"  An OVN router can handle the MTU mismatch between a private"},{"line_number":77,"context_line":"  network and a gateway network, if the flag \"ovn_emit_need_to_frag\" is"},{"line_number":78,"context_line":"  enabled. But OVN does not fragment the traffic between two private networks"},{"line_number":79,"context_line":"  connected using an OVN router. This feature is being implemented in"},{"line_number":80,"context_line":"  https://bugs.launchpad.net/neutron/+bug/2032817 and"}],"source_content_type":"text/x-rst","patch_set":1,"id":"2b74f968_6eedb861","line":77,"updated":"2023-09-12 09:48:26.000000000","message":"This kind of conflicts with what is proposed in https://review.opendev.org/c/openstack/neutron/+/892839/2.\n\nDid you test N/S fragmentation happening in both directions? Can you share details of that test?","commit_id":"26edab5028422678180d418f945bf7112008edd8"},{"author":{"_account_id":8313,"name":"Lajos Katona","display_name":"lajoskatona","email":"katonalala@gmail.com","username":"elajkat","status":"Ericsson Software Technology"},"change_message_id":"f1653bf4a629ef09bf0070e589e0f8c003241751","unresolved":true,"context_lines":[{"line_number":74,"context_line":"* MTU fragmentation between private networks."},{"line_number":75,"context_line":""},{"line_number":76,"context_line":"  An OVN router can handle the MTU mismatch between a private"},{"line_number":77,"context_line":"  network and a gateway network, if the flag \"ovn_emit_need_to_frag\" is"},{"line_number":78,"context_line":"  enabled. But OVN does not fragment the traffic between two private networks"},{"line_number":79,"context_line":"  connected using an OVN router. This feature is being implemented in"},{"line_number":80,"context_line":"  https://bugs.launchpad.net/neutron/+bug/2032817 and"}],"source_content_type":"text/x-rst","patch_set":1,"id":"84b1bf90_70518974","line":77,"range":{"start_line":77,"start_character":40,"end_line":77,"end_character":44},"updated":"2023-09-12 13:17:05.000000000","message":"config option just to be clear where to search?","commit_id":"26edab5028422678180d418f945bf7112008edd8"},{"author":{"_account_id":16688,"name":"Rodolfo Alonso","email":"ralonsoh@redhat.com","username":"rodolfo-alonso-hernandez"},"change_message_id":"b4b42dbaffe30de444cf9dcdd0546efca9b3b773","unresolved":true,"context_lines":[{"line_number":74,"context_line":"* MTU fragmentation between private networks."},{"line_number":75,"context_line":""},{"line_number":76,"context_line":"  An OVN router can handle the MTU mismatch between a private"},{"line_number":77,"context_line":"  network and a gateway network, if the flag \"ovn_emit_need_to_frag\" is"},{"line_number":78,"context_line":"  enabled. But OVN does not fragment the traffic between two private networks"},{"line_number":79,"context_line":"  connected using an OVN router. This feature is being implemented in"},{"line_number":80,"context_line":"  https://bugs.launchpad.net/neutron/+bug/2032817 and"}],"source_content_type":"text/x-rst","patch_set":1,"id":"ad6d1e23_1e3fccca","line":77,"in_reply_to":"2b74f968_6eedb861","updated":"2023-09-14 14:35:14.000000000","message":"Right, if MTU external \u003c MTU internal, the flag \"gateway_mtu\" is set in the GW LRP (this is set by Neutron when the config option \"ovn_emit_need_to_frag\" is enabled). In this case any packet (coming from any side, the VM or external), is correctly fragmented.\n\nIn the case of having MTU external \u003e MTU internal, the flag \"gateway_mtu\" is not set. In this case:\n* If the traffic is sent from the external network, exceeding the internal MTU, this traffic never reaches the VM (nor the TAP interface).\n* The the traffic is sent from the VM, the request (for example a ping) is fragmented, but not the reply (similar to the upper line).\n\nI\u0027ll open a bugzilla to cover this case.","commit_id":"26edab5028422678180d418f945bf7112008edd8"}]}