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Created attachment 1697739 [details]
Reproduce script

Description of problem:

The `nmcli d reapply <dev_name>` does not apply bond options changed in
connection.

Version-Release number of selected component (if applicable):
NetworkManager-1.27.0-26090.56b15ca0b6.el8.x86_64

How reproducible:
100%

Steps to Reproduce:
1. ./nm_bug.sh
2.
3.

Actual results:

/sys/class/net/bond99/bonding/updelay is 0 after reapply.

Expected results:

/sys/class/net/bond99/bonding/updelay is 1000 after reapply.


Additional info:

Created attachment 1697740 [details]
System logs with NM trace enabled (NetworkManager-1.27.0-26090.56b15ca0b6.el8.x86_64)

Patch proposed at https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/598. Waiting for review.

Patch merged upstream https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/commit/ac6f21cae442bb35b08337f14a97d6ae3f71b52a.

CI test added:
https://gitlab.freedesktop.org/NetworkManager/NetworkManager-ci/-/merge_requests/620

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 (NetworkManager bug fix and enhancement update), 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-2020:4499