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Bug 1999857 - bind does not listen on all addresses over TCP when listen-on/listen-on-v6 has specific IPs or any listed
Summary: bind does not listen on all addresses over TCP when listen-on/listen-on-v6 ha...
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: bind
Version: 8.6
Hardware: x86_64
OS: Linux
unspecified
medium
Target Milestone: rc
: ---
Assignee: Petr Menšík
QA Contact: rhel-cs-infra-services-qe
URL:
Whiteboard:
Depends On: 1999334 1999691
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-08-31 19:56 UTC by Petr Menšík
Modified: 2023-03-03 07:27 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of: 1999691
Environment:
Last Closed: 2023-03-03 07:27:52 UTC
Type: Bug
Target Upstream Version:
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker RHELPLAN-95764 0 None None None 2021-08-31 19:57:03 UTC

Description Petr Menšík 2021-08-31 19:56:34 UTC 
+++ This bug was initially created as a clone of Bug #1999691 +++

+++ This bug was initially created as a clone of Bug #1999334 +++

Description of problem:
On boot, named will not listen on TCP sockets of all specified (or any) IP addresses. This appears to be an ordering problem during startup. When service is restarted by hand, it starts listening on TCP too.

Version-Release number of selected component (if applicable):
bind-9.16.20-3.fc34.x86_64

How reproducible:
Always.

Steps to Reproduce:
1. Configure specific IPs in listen-on/listen-on-v6 directives or any.
2. Boot machine with named-chroot service enabled.
3. Named only listening on all IPs over UDP.

Actual results:
Listens on all addresses over UDP only.

Expected results:
Should listen on TCP too, not just on the loopback address.

Additional info:
I tried adding:
-----
[Unit]
Wants=network-online.target
After=network-online.target
-----

in /etc/systemd/system/named-chroot.service.d/named-chroot.conf file and that did help.

--- Additional comment from Petr Špaček on 2021-08-31 09:21:39 CEST ---

I think this is related to upstream issue #2852, please continue there.

--- Additional comment from Petr Menšík on 2021-08-31 16:15:17 CEST ---

Indeed, Petr seems to be correct, it looks related to upstream issue linked.

Can you please check journalctl would contain additionally listening?

journalctl -xeu named-chroot | grep 'additionally listening'

I were unable to reproduce this issue on my test machine. My named listens on all IPs with both UDP and TCP, checked by:
lsof -n -p $(pidof named) | grep :domain

Is this issue reproducible on every reboot on your system?
Would "rndc scan" command fix missing listeners?

--- Additional comment from Petr Menšík on 2021-08-31 17:06:24 CEST ---

I were able to reproduce this issue with reproducer script provided on upstream. It seems reliable when named starts and passes scanning of addresses in correct place.
Comment 3 RHEL Program Management 2023-03-03 07:27:52 UTC 
After evaluating this issue, there are no plans to address it further or fix it in an upcoming release.  Therefore, it is being closed.  If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.
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