Public bug reported: 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 ** Affects: dnsmasq (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug armhf focal -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1916462 Title: dnsmasq failed to send packet: Network is unreachable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/1916462/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
