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Bug 2222699

Summary:	cloud-init overwrites MTU values in an instance, which are set as `interface_mtu` from DHCP server.
Product:	Red Hat OpenStack	Reporter:	René Ribaud <rribaud>
Component:	openstack-nova	Assignee:	René Ribaud <rribaud>
Status:	CLOSED ERRATA	QA Contact:	OSP DFG:Compute <osp-dfg-compute>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	17.1 (Wallaby)	CC:	alifshit, bgibizer, dasmith, eglynn, gbrinn, jamsmith, jhakimra, jlibosva, joflynn, kchamart, mtomaska, osp-dfg-compute, rhayakaw, sbauza, sgordon, smooney, vromanso
Target Milestone:	z2	Keywords:	Patch, Triaged
Target Release:	17.1
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	openstack-nova-23.2.3-17.1.20231018130821.2ace99d.el9ost	Doc Type:	Enhancement
Doc Text:	This update fixes a bug that set the wrong MTU value on tenant networks that were changed from VXLAN to Geneve after a migration from the OVS mechanism driver to the OVN mechanism driver. Before this update, the `cloud-init` package overrode the value that was correctly set by the DHCP server. + For example, after a migration from the OVS mechanism driver with VXLAN to the OVN mechanism driver to Geneve with a 1442 MTU, cloud-init reset the MTU to 1500. + With this update, the value set by the DHCP server persists. +	Story Points:	---
Clone Of:	2178587	Environment:
Last Closed:	2024-01-16 14:30:00 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2178587
Bug Blocks:

Comment 23 errata-xmlrpc 2024-01-16 14:30:00 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Red Hat OpenStack Platform 17.1.2 bug fix and enhancement advisory), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2024:0209

Comment 24 Red Hat Bugzilla 2024-05-16 04:25:13 UTC

The needinfo request[s] on this closed bug have been removed as they have been unresolved for 120 days