This bug was fixed in the package dnsmasq - 2.82-1ubuntu1.2
---------------
dnsmasq (2.82-1ubuntu1.2) groovy-security; urgency=medium
* SECURITY REGRESSION: issue with multiple queries and issue with retries
(LP: #1916462)
- backport multiple upstream commits to fix regressions
+ 04490bf622ac84891aad6f2dd2edf83725decdee
+ 12af2b171de0d678d98583e2190789e544440e02
+ 3f535da79e7a42104543ef5c7b5fa2bed819a78b
+ 25e63f1e56f5acdcf91893a1b92ad1e0f2f552d8
+ 141a26f979b4bc959d8e866a295e24f8cf456920
+ 305cb79c5754d5554729b18a2c06fe7ce699687a
-- Marc Deslauriers <marc.deslauri...@ubuntu.com> Tue, 23 Feb 2021
07:52:53 -0500
** Changed in: dnsmasq (Ubuntu)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1916462
Title:
dnsmasq failed to send packet: Network is unreachable
Status in dnsmasq package in Ubuntu:
Fix Released
Bug description:
the log shows this:
Feb 22 09:37:53 myserver dnsmasq[2259]: failed to send packet: Network
is unreachable
repeatedly and frequently.
This is a known bug in dnsmasq and has been fixed upstream (according
to the thread quoted below). Apparently it is IPv6 related and
triggered by Windows and Mac clients. An extensive thread on the
subject is here on the OpenWRT forum:
https://forum.openwrt.org/t/security-advisory-2021-01-19-1-dnsmasq-
multiple-vulnerabilities/85903/123
I think this has been reported in the fallout of the quoted security
vulnerabilities. I don't think it is a security vulnerability in
itself.
dnsmasq version: 2.80-1.1ubuntu1.2
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: dnsmasq 2.80-1.1ubuntu1.2
Uname: Linux 5.4.98-219 armv7l
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: armhf
CasperMD5CheckResult: skip
Date: Mon Feb 22 09:34:12 2021
PackageArchitecture: all
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_GB.UTF-8
SHELL=/bin/bash
SourcePackage: dnsmasq
UpgradeStatus: Upgraded to focal on 2020-11-15 (98 days ago)
modified.conffile..etc.default.dnsmasq: [modified]
mtime.conffile..etc.default.dnsmasq: 2018-06-27T16:10:40.086905
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