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Description of problem:

When the link-local address is removed externally, NetworkManager marks the ipv6ll method as failed and the whole activation fails if IPv6 is required. This is particularly bad when the device is virtual (bond, bridge, etc.) because the interface will disappear. This is a regression introduced in 1.36.0.


Version-Release number of selected component:

All versions from 1.36 to current git main (1.43.7)


Steps to Reproduce:

$ nmcli connection add type ethernet ifname enp1s0 ipv4.method disabled connection.autoconnect no
$ nmcli connection up ethernet-enp1s0
$ ip addr flush dev enp1s0
$ nmcli connection


Actual results:
The connection goes down.


Expected results:
The connection stays up.


Additional info:
Related to https://issues.redhat.com/browse/OCPBUGS-4501

Created attachment 1964922 [details]
Reproducer script

Test written, compose tested.
-> VERIFIED

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-2023:6585