Note: This bug is displayed in read-only format because
the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
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
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