Bug 1751695 - Keep MTU settings of interface if possible after base interface MTU changes
Summary: Keep MTU settings of interface if possible after base interface MTU changes
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: nmstate
Version: 8.1
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: rc
: 8.2
Assignee: Gris Ge
QA Contact: Mingyu Shi
URL:
Whiteboard:
Depends On: 1751079 1770691 1779162
Blocks: VDSM_use_NetworkManager
TreeView+ depends on / blocked
 
Reported: 2019-09-12 12:12 UTC by Ales Musil
Modified: 2022-10-12 07:22 UTC (History)
4 users (show)

Fixed In Version: nmstate-0.2.3-1.el8
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2020-04-28 16:00:06 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Bugzilla 1751079 0 unspecified CLOSED Keep MTU settings of interface if possible after base interface MTU changes 2022-12-22 22:33:34 UTC
Red Hat Issue Tracker RHELPLAN-37322 0 None None None 2022-10-12 07:22:54 UTC
Red Hat Product Errata RHBA-2020:1696 0 None None None 2020-04-28 16:00:28 UTC

Description Ales Musil 2019-09-12 12:12:36 UTC 
This bug was initially created as a copy of Bug #1751079

I am copying this bug because: 



Description of problem:

Considering scenario eth0 and two VLANs on top eth0.10 and eth.20 all of them with MTU 2000. When we change the MTU of eth0 and eth0.20 and apply this config the MTU of eth0.10 is reverted to default value (1500), but in the NM has still 2000 in the config. 


Version-Release number of selected component (if applicable):

NetworkManager-1.20.0-3.el8.x86_64

How reproducible:

100%

Steps to Reproduce:

Full reproducer is in attachment. 

Actual results:

76: dummy_abc: <BROADCAST,NOARP,UP,LOWER_UP> mtu 2200 
77: dummy_abc.10@dummy_abc: <BROADCAST,NOARP,UP,LOWER_UP> mtu 1500 
79: dummy_abc.20@dummy_abc: <BROADCAST,NOARP,UP,LOWER_UP> mtu 2200 


Expected results:

76: dummy_abc: <BROADCAST,NOARP,UP,LOWER_UP> mtu 2200 
77: dummy_abc.10@dummy_abc: <BROADCAST,NOARP,UP,LOWER_UP> mtu 2000 
79: dummy_abc.20@dummy_abc: <BROADCAST,NOARP,UP,LOWER_UP> mtu 2200
Comment 5 errata-xmlrpc 2020-04-28 16:00:06 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, 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-2020:1696
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