Bug 1970335

Summary: Incorrect set hostname to localhost using DNS reverse lookup of ipv6 address
Product: Red Hat Enterprise Linux 8 Reporter: Gris Ge <fge>
Component: NetworkManagerAssignee: Beniamino Galvani <bgalvani>
Status: CLOSED ERRATA QA Contact: Vladimir Benes <vbenes>
Severity: medium Docs Contact:
Priority: medium    
Version: 8.4CC: acardace, atragler, bgalvani, fpokryvk, lrintel, rkhan, sgoel01, sukulkar, till, wenliang
Target Milestone: betaKeywords: Triaged, ZStream
Target Release: 8.5   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: NetworkManager-1.32.0-1.el8 Doc Type: No Doc Update
Doc Text:
Story Points: ---
Clone Of:
: 1970398 (view as bug list) Environment:
Last Closed: 2021-11-09 19:30:32 UTC Type: Bug
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:    
Bug Blocks: 1970398    

Description Gris Ge 2021-06-10 09:37:15 UTC 
Description of problem:

When server got IPv6 address assigned from IPv6-RA/autoconf, the reverse hostname lookup via DNS will fallback to `myhostname` which generate `localhost`

Please checking openshift bug https://bugzilla.redhat.com/show_bug.cgi?id=1959842 for detail.

Version-Release number of selected component (if applicable):
NetworkManager-1.32.0-0.4.el8

How reproducible:


Steps to Reproduce:
 * Please contact openshift team in https://bugzilla.redhat.com/show_bug.cgi?id=1959842

Actual results:

`localhost` been used as hostname of server.

Expected results:

Server should only use DNS server returned name instead of `myhostname` module.

Additional info:
Comment 8 Till Maas 2021-06-22 14:37:30 UTC 
*** Bug 1907049 has been marked as a duplicate of this bug. ***
Comment 9 Vladimir Benes 2021-07-09 09:38:58 UTC 
NMCI test added:
https://gitlab.freedesktop.org/NetworkManager/NetworkManager-ci/-/merge_requests/795
Comment 11 errata-xmlrpc 2021-11-09 19:30:32 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 (Moderate: NetworkManager security, 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/RHSA-2021:4361