Package: syncthing
Version: 1.29.5~ds1-2
Severity: minor

Dear Maintainer,

The old primary STUN server, stun.syncthing.net, has been discontinued
and removed from more recent syncthing versions (upstream commit
e5b72da60742a65423e52e8ffd0166c9ed6f2c48). However, for some reason,
the DNS name still resolves to 192.0.2.42 (an RFC1918 private
address).

This triggers a flood of warnings such as “possible DNS-rebind attack
detected: stun.syncthing.net” in dnsmasq on, for example, OpenWRT
routers, and likely something similar on other routers and firewalls.

Please consider dropping stun.syncthing.net from the Debian version.

Henrik

-- System Information:
Debian Release: 13.6
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 6.12.101+deb13-amd64 (SMP w/2 CPU threads; PREEMPT)
Kernel taint flags: TAINT_WARN, TAINT_CRAP
Locale: LANG=fi_FI.UTF-8, LC_CTYPE=fi_FI.UTF-8 (charmap=UTF-8), 
LANGUAGE=en_US:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: SELinux: enabled - Mode: Permissive - Policy name: default

Versions of packages syncthing depends on:
ii  init-system-helpers  1.69~deb13u1
ii  libc6                2.41-12+deb13u3

Versions of packages syncthing recommends:
ii  xdg-utils  1.2.1-2

syncthing suggests no packages.

-- no debconf information

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