[Debian-iot-maintainers] Bug#1128131: mosquitto won't start due to missing libdlt.so.2

Nick Black (Public gmail account) dankamongmen at gmail.com
Sun Feb 15 23:51:17 GMT 2026


Package: mosquitto
Version: 2.0.22-5
Severity: grave
Justification: renders package unusable
X-Debbugs-Cc: dankamongmen at gmail.com

Dear Maintainer,

Since the recent upgrade of libdlt2 from 2.18.11-5 to 3.0.0-2, mosquitto 
does not start, failing to link libdlt.so.2. libdlt.so.3 is installed by 
the more recent libdlt2 package.

[qgp](130) $ ldd /usr/sbin/mosquitto
	linux-vdso.so.1 (0x00007f620ffd9000)
	libwrap.so.0 => /usr/lib/x86_64-linux-gnu/libwrap.so.0 (0x00007f620ff58000)
	libsystemd.so.0 => /usr/lib/x86_64-linux-gnu/libsystemd.so.0 (0x00007f620fe3f000)
	libdlt.so.2 => not found
	libssl.so.3 => /usr/lib/x86_64-linux-gnu/libssl.so.3 (0x00007f620fd32000)
	libm.so.6 => /usr/lib/x86_64-linux-gnu/libm.so.6 (0x00007f620fc3c000)
	libwebsockets.so.19 => /usr/lib/x86_64-linux-gnu/libwebsockets.so.19 (0x00007f620fbba000)
	libcrypto.so.3 => /usr/lib/x86_64-linux-gnu/libcrypto.so.3 (0x00007f620f400000)
	libc.so.6 => /usr/lib/x86_64-linux-gnu/libc.so.6 (0x00007f620f20a000)
	/lib64/ld-linux-x86-64.so.2 (0x00007f620ffdb000)
	libcap.so.2 => /usr/lib/x86_64-linux-gnu/libcap.so.2 (0x00007f620fbae000)
	libz.so.1 => /usr/lib/x86_64-linux-gnu/libz.so.1 (0x00007f620fb8e000)
	libzstd.so.1 => /usr/lib/x86_64-linux-gnu/libzstd.so.1 (0x00007f620fac2000)
[qgp](0) $

-- System Information:
Debian Release: forky/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 6.19.0 (SMP w/16 CPU threads)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages mosquitto depends on:
ii  adduser              3.154
ii  init-system-helpers  1.69
ii  libc6                2.42-13
ii  libcjson1            1.7.19-2
ii  libdlt2              3.0.0-2
ii  libmosquitto1        2.0.22-5
ii  libssl3t64           3.5.5-1
ii  libsystemd0          259.1-1
ii  libwebsockets19t64   4.3.5-3
ii  libwrap0             7.6.q-36+b2
ii  sysvinit-utils       3.15-6

mosquitto recommends no packages.

Versions of packages mosquitto suggests:
ii  apparmor  4.1.6-2

-- Configuration Files:
/etc/mosquitto/mosquitto.conf changed [not included]
/etc/mosquitto/pwfile.example [file not found]

-- no debconf information



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