Package: avahi-daemon Version: 0.6.32-2 Severity: important Dear Maintainer,
I installed Debian 9.1 on a Lenovo P50 and with no customizations other than what the installer afforded me I was observing packet loss every few minutes. ssh to this host would hang for seconds to minutes at a time, say, every few minutes. I installed mtr on a remote host, and within 200 to 250 packets it would report significant packet loss. tcpdump showed that ping packets were not being received on this host for almost a minute. tcpdump from remote host showed pings being sent every second but no response. I duplicated packet loss with a 3rd remote host. Replaced the cable and switch between this and remote host, and were still able to reproduce the issue. By chance, I booted this host into recovery mode, and added my ethernet interface to /etc/network/interfaces then systemctl start networking. Then retried the mtr scenario and found no packet loss. I then bi-sected between recovery (rescue.target?) and graphical.target to determine that if I did not start avahi-daemon or services that depends on it I would not be seeing packet loss along these lines (commented out lines would cause packet loss): #!/bin/bash systemctl start basic.target systemctl start anacron.service systemctl start apache2.service #systemctl start avahi-daemon.service systemctl start console-setup.service systemctl start cron.service #systemctl start cups-browsed.service #systemctl start cups.path systemctl start dbus.service systemctl start hddtemp.service systemctl start lm-sensors.service systemctl start ModemManager.service systemctl start networking.service systemctl start NetworkManager.service systemctl start pppd-dns.service systemctl start rsyslog.service systemctl start speech-dispatcher.service systemctl start ssh.service systemctl start systemd-ask-password-wall.path systemctl start systemd-logind.service systemctl start systemd-update-utmp-runlevel.service systemctl start systemd-user-sessions.service Finally, I apt-get pruge avahi-daemon and rebooted and not seeing any packet loss since. ifconfig did not show any errors on this or rmeote end. -- System Information: Debian Release: 9.1 APT prefers stable APT policy: (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 4.9.0-3-amd64 (SMP w/8 CPU cores) Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8), LANGUAGE=en_US.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages avahi-daemon depends on: ii adduser 3.115 ii bind9-host [host] 1:9.10.3.dfsg.P4-12.3+deb9u2 ii dbus 1.10.18-1 ii host 1:9.10.3.dfsg.P4-12.3+deb9u2 ii init-system-helpers 1.48 ii libavahi-common3 0.6.32-2 ii libavahi-core7 0.6.32-2 ii libc6 2.24-11+deb9u1 ii libcap2 1:2.25-1 ii libdaemon0 0.14-6 ii libdbus-1-3 1.10.18-1 ii libexpat1 2.2.0-2+deb9u1 ii lsb-base 9.20161125 Versions of packages avahi-daemon recommends: ii libnss-mdns 0.10-8 Versions of packages avahi-daemon suggests: ii avahi-autoipd 0.6.32-2 -- no debconf information
