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Bug#1140074: linux-image-7.0.10+deb13-amd64: excessive "icmp: detected local route for xx" logs

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From debian.spotter879@passmail.net
Newsgroups linux.debian.bugs.dist, linux.debian.kernel
Subject Bug#1140074: linux-image-7.0.10+deb13-amd64: excessive "icmp: detected local route for xx" logs
Date Mon, 15 Jun 2026 15:10:01 +0200
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Package: linux-image-7.0.10+deb13-amd64
Version: 7.0.10-1~bpo13+1
Severity: important
X-Debbugs-Cc: debian.spotter879@passmail.net

When upgrading Debian system to latest version (Trixie), with the backported kernel,
we can notice a highly unusual amount of log lines stating "icmp: detected local route for xx"
are present inside of dmesg.

This seem to be a similar issue to the one happening in an other bug report, but which was linked to a much older kernel version (#1135514), and is now considered resolved.

The problem also happens when running Debian Bookworm, and the latest backported kernel versions. This is true for at least the version "6.12.85+deb12-amd64" but is perhaps not limited to it.
renaud

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Bug#1140074: linux-image-7.0.10+deb13-amd64: excessive "icmp: detected local route for xx" logs debian.spotter879@passmail.net - 2026-06-15 15:10 +0200
  Processed: Re: Bug#1140074: linux-image-7.0.10+deb13-amd64:  excessive "icmp: detected local route for xx" logs "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-06-17 15:30 +0200
  Bug#1140074: linux-image-7.0.10+deb13-amd64: excessive "icmp: detected local route for xx" logs Salvatore Bonaccorso <carnil@debian.org> - 2026-06-17 15:30 +0200

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