I hope you don't mind me commenting again on a Debian bug report, but this problem occurs across distributions and I think my comments may be of some relevance to Debian users too.
I'm even more convinced the problem seen by some (not all) of the users commenting in this thread is due to a bug in NetworkManager. I believe the issue with Avahi daemon generating an IPv6 Link-Local address is a consequence of NetworkManager not always activating an interface and therefore not obtaining an IPv4 address, i.e. the IPv6 Link-Local address produced by the Avahi daemon is a side effect, not the root cause. After my previous comment (Message #136) I discovered that adding "use-ipv6=false" in /etc/avahi/avahi-daemon.conf had not prevented avahi-daemon using IPv6. However, adding the following lines in /etc/avahi/avahi-daemon.conf defintely *does* prevent avahi-daemon from using IPv6 in my installation: use-ipv4=true use-ipv6=false publish-a-on-ipv6=no publish-aaaa-on-ipv4=no You can see in the message log output below that the Avahi daemon is no longer generating an IPv6 Link-Local address. However, even with IPv6 disabled in avahi-daemon, the problem of a second eth0 connection with an IPv6 Link-Local address still occurs in my installation. This indicates the problem is not caused by the Avahi daemon. Mar 18 22:17:31 localhost syslog-ng[8316]: syslog-ng starting up; version='3.6.2' Mar 18 22:17:32 localhost NetworkManager[8346]: <info> NetworkManager (version 1.0.0) is starting... Mar 18 22:17:32 localhost NetworkManager[8346]: <info> Read config: /etc/NetworkManager/NetworkManager.conf Mar 18 22:17:32 localhost NetworkManager[8346]: <info> WEXT support is enabled Mar 18 22:17:34 localhost kernel: fglrx_pci 0000:01:00.0: irq 34 for MSI/MSI-X Mar 18 22:17:34 localhost kernel: <6>[fglrx] Firegl kernel thread PID: 8351 Mar 18 22:17:34 localhost kernel: <6>[fglrx] Firegl kernel thread PID: 8352 Mar 18 22:17:34 localhost kernel: <6>[fglrx] Firegl kernel thread PID: 8353 Mar 18 22:17:34 localhost kernel: <6>[fglrx] IRQ 34 Enabled Mar 18 22:17:34 localhost kernel: <6>[fglrx] Reserved FB block: Shared offset:0, size:1000000 Mar 18 22:17:34 localhost kernel: <6>[fglrx] Reserved FB block: Unshared offset:f7e2000, size:4000 Mar 18 22:17:34 localhost kernel: <6>[fglrx] Reserved FB block: Unshared offset:f7e6000, size:51a000 Mar 18 22:17:34 localhost kernel: <6>[fglrx] Reserved FB block: Unshared offset:3fff3000, size:d000 Mar 18 22:17:33 localhost NetworkManager[8346]: <info> Loaded plugin keyfile: (c) 2007 - 2013 Red Hat, Inc. To report bugs please use the NetworkManager mailing list. Mar 18 22:17:33 localhost NetworkManager[8346]: <info> new connection /etc/NetworkManager/system-connections/Cisco00497 Mar 18 22:17:33 localhost NetworkManager[8346]: <info> new connection /etc/NetworkManager/system-connections/eth0 Mar 18 22:17:33 localhost NetworkManager[8346]: <info> new connection /etc/NetworkManager/system-connections/DIRECT-HeC460 Series Mar 18 22:17:33 localhost NetworkManager[8346]: <info> monitoring kernel firmware directory '/lib/firmware'. Mar 18 22:17:33 localhost NetworkManager[8346]: <info> rfkill0: found WiFi radio killswitch (at /sys/devices/pci0000:00/0000:00:1c.1/0000:03:00.0/ieee80211/phy0/rfkill0) (driver iwlwifi) Mar 18 22:17:33 localhost NetworkManager[8346]: <info> WiFi hardware radio set enabled Mar 18 22:17:33 localhost NetworkManager[8346]: <info> WWAN hardware radio set enabled Mar 18 22:17:33 localhost /etc/init.d/NetworkManager[8326]: WARNING: NetworkManager has started, but is inactive Mar 18 22:17:33 localhost NetworkManager[8346]: <info> Loaded device plugin: /usr/lib64/NetworkManager/libnm-device-plugin-bluetooth.so Mar 18 22:17:33 localhost NetworkManager[8346]: <info> Loaded device plugin: /usr/lib64/NetworkManager/libnm-device-plugin-adsl.so Mar 18 22:17:33 localhost NetworkManager[8346]: <info> Loaded device plugin: /usr/lib64/NetworkManager/libnm-device-plugin-wwan.so Mar 18 22:17:33 localhost NetworkManager[8346]: <info> Loaded device plugin: /usr/lib64/NetworkManager/libnm-device-plugin-wifi.so Mar 18 22:17:33 localhost NetworkManager[8346]: <info> WiFi disabled by radio killswitch; enabled by state file Mar 18 22:17:33 localhost NetworkManager[8346]: <info> WWAN enabled by radio killswitch; enabled by state file Mar 18 22:17:33 localhost NetworkManager[8346]: <info> WiMAX enabled by radio killswitch; enabled by state file Mar 18 22:17:33 localhost NetworkManager[8346]: <info> Networking is enabled by state file Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (lo): link connected Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (lo): carrier is ON Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (lo): new Generic device (driver: 'unknown' ifindex: 1) Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (lo): exported as /org/freedesktop/NetworkManager/Devices/0 Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): link connected Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): carrier is ON Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): new Ethernet device (driver: 'atl1c' ifindex: 2) Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): exported as /org/freedesktop/NetworkManager/Devices/1 Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): device state change: unmanaged -> unavailable (reason 'connection-assumed') [10 20 41] Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): device state change: unavailable -> disconnected (reason 'connection-assumed') [20 30 41] Mar 18 22:17:33 localhost NetworkManager[8346]: <info> startup complete Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): Activation: starting connection 'eth0' Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): Activation: Stage 1 of 5 (Device Prepare) scheduled... Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (wlan0): using nl80211 for WiFi device control Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (wlan0): new 802.11 WiFi device (driver: 'iwlwifi' ifindex: 3) Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (wlan0): exported as /org/freedesktop/NetworkManager/Devices/2 Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (wlan0): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2] Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (wlan0): preparing device Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): Activation: Stage 1 of 5 (Device Prepare) started... Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): device state change: disconnected -> prepare (reason 'none') [30 40 0] Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): Activation: Stage 2 of 5 (Device Configure) scheduled... Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): Activation: Stage 1 of 5 (Device Prepare) complete. Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): Activation: Stage 2 of 5 (Device Configure) starting... Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): device state change: prepare -> config (reason 'none') [40 50 0] Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): Activation: Stage 2 of 5 (Device Configure) successful. Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): Activation: Stage 3 of 5 (IP Configure Start) scheduled. Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): Activation: Stage 2 of 5 (Device Configure) complete. Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): Activation: Stage 3 of 5 (IP Configure Start) started... Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): device state change: config -> ip-config (reason 'none') [50 70 0] Mar 18 22:17:33 localhost dbus[7763]: [system] Activating service name='org.freedesktop.ModemManager1' (using servicehelper) Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): Activation: Stage 5 of 5 (IPv6 Commit) scheduled... Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): Activation: Stage 3 of 5 (IP Configure Start) complete. Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): Activation: Stage 5 of 5 (IPv6 Commit) started... Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): device state change: ip-config -> ip-check (reason 'none') [70 80 0] Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): Activation: Stage 5 of 5 (IPv6 Commit) complete. Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): device state change: ip-check -> secondaries (reason 'none') [80 90 0] Mar 18 22:17:33 localhost NetworkManager[8346]: <info> (eth0): device state change: secondaries -> activated (reason 'none') [90 100 0] Mar 18 22:17:33 localhost NetworkManager[8346]: <info> NetworkManager state is now CONNECTED_LOCAL Mar 18 22:17:33 localhost acpid[8386]: starting up with netlink and the input layer Mar 18 22:17:33 localhost acpid[8386]: 6 rules loaded Mar 18 22:17:33 localhost acpid[8386]: waiting for events: event logging is off Mar 18 22:17:34 localhost ModemManager[8385]: <info> ModemManager (version 1.4.2) starting in system bus... Mar 18 22:17:34 localhost NetworkManager[8346]: <info> (eth0): Activation: successful, device activated. Mar 18 22:17:34 localhost dbus[7763]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper) Mar 18 22:17:34 localhost dbus[7763]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher' Mar 18 22:17:34 localhost nm-dispatcher[8435]: Dispatching action 'up' for eth0 Mar 18 22:17:34 localhost rpc.statd[8451]: Version 1.3.2 starting Mar 18 22:17:34 localhost rpc.statd[8451]: Flags: TI-RPC Mar 18 22:17:34 localhost /etc/init.d/NetworkManager[8457]: status: inactive Mar 18 22:17:34 localhost rpc.statd[8451]: Running as root. chown /var/lib/nfs to choose different user Mar 18 22:17:34 localhost /etc/init.d/NetworkManager[8469]: status: inactive Mar 18 22:17:34 localhost dbus[7763]: [system] Successfully activated service 'org.freedesktop.ModemManager1' Mar 18 22:17:34 localhost NetworkManager[8346]: <info> ModemManager disappeared from bus Mar 18 22:17:34 localhost NetworkManager[8346]: <info> ModemManager available in the bus Mar 18 22:17:35 localhost sm-notify[8556]: Version 1.3.2 starting Mar 18 22:17:35 localhost avahi-daemon[8585]: Found user 'avahi' (UID 108) and group 'avahi' (GID 444). Mar 18 22:17:35 localhost avahi-daemon[8585]: Successfully dropped root privileges. Mar 18 22:17:35 localhost avahi-daemon[8585]: avahi-daemon 0.6.31 starting up. Mar 18 22:17:35 localhost avahi-daemon[8585]: Successfully called chroot(). Mar 18 22:17:35 localhost avahi-daemon[8585]: Successfully dropped remaining capabilities. Mar 18 22:17:35 localhost avahi-daemon[8585]: Loading service file /services/sftp-ssh.service. Mar 18 22:17:35 localhost avahi-daemon[8585]: Loading service file /services/ssh.service. Mar 18 22:17:35 localhost avahi-daemon[8585]: Network interface enumeration completed. Mar 18 22:17:35 localhost avahi-daemon[8585]: Registering HINFO record with values 'X86_64'/'LINUX'. Mar 18 22:17:35 localhost avahi-daemon[8585]: Server startup complete. Host name is meshedgedx.local. Local service cookie is 3778762828. Mar 18 22:17:35 localhost avahi-daemon[8585]: Service "meshedgedx" (/services/ssh.service) successfully established. Mar 18 22:17:35 localhost avahi-daemon[8585]: Service "meshedgedx" (/services/sftp-ssh.service) successfully established. Mar 18 22:17:35 localhost ntpd[8645]: ntpd 4.2.8@1.3265-o Wed 4 Mar 02:23:30 UTC 2015 (1): Starting Mar 18 22:17:35 localhost ntpd[8645]: Command line: ntpd -g -q Mar 18 22:17:35 localhost ntpd[8645]: proto: precision = 0.061 usec (-24) Mar 18 22:17:35 localhost ntpd[8645]: Listen and drop on 0 v6wildcard [::]:123 Mar 18 22:17:35 localhost ntpd[8645]: Listen and drop on 1 v4wildcard 0.0.0.0:123 Mar 18 22:17:35 localhost ntpd[8645]: Listen normally on 2 lo 127.0.0.1:123 Mar 18 22:17:35 localhost ntpd[8645]: Listen normally on 3 lo [::1]:123 Mar 18 22:17:35 localhost ntpd[8645]: Listen normally on 4 eth0 [fe80::725a:b6ff:fe3e:c18a%2]:123 Mar 18 22:17:35 localhost ntpd[8645]: Listening on routing socket on fd #21 for interface updates Mar 18 22:17:36 localhost kernel: fbcondecor: console 1 using theme 'Emergance' Mar 18 22:17:37 localhost kernel: fbcondecor: switched decor state to 'on' on console 1 Mar 18 22:17:37 localhost kernel: fbcondecor: console 2 using theme 'Emergance' Mar 18 22:17:37 localhost kernel: fbcondecor: switched decor state to 'on' on console 2 Mar 18 22:17:37 localhost kernel: fbcondecor: console 3 using theme 'Emergance' Mar 18 22:17:37 localhost kernel: fbcondecor: switched decor state to 'on' on console 3 Mar 18 22:17:37 localhost kernel: fbcondecor: console 4 using theme 'Emergance' Mar 18 22:17:37 localhost kernel: fbcondecor: switched decor state to 'on' on console 4 Mar 18 22:17:37 localhost kernel: fbcondecor: console 5 using theme 'Emergance' Mar 18 22:17:37 localhost kernel: fbcondecor: switched decor state to 'on' on console 5 Mar 18 22:17:36 localhost bluetoothd[8787]: Bluetooth daemon 5.28 Mar 18 22:17:36 localhost bluetoothd[8787]: Starting SDP server Mar 18 22:17:37 localhost kernel: Bluetooth: Core ver 2.19 Mar 18 22:17:37 localhost kernel: NET: Registered protocol family 31 Mar 18 22:17:37 localhost kernel: Bluetooth: HCI device and connection manager initialized Mar 18 22:17:37 localhost kernel: Bluetooth: HCI socket layer initialized Mar 18 22:17:37 localhost kernel: Bluetooth: L2CAP socket layer initialized Mar 18 22:17:37 localhost kernel: Bluetooth: SCO socket layer initialized Mar 18 22:17:38 localhost kernel: Bluetooth: BNEP (Ethernet Emulation) ver 1.3 Mar 18 22:17:38 localhost kernel: Bluetooth: BNEP filters: protocol multicast Mar 18 22:17:38 localhost kernel: Bluetooth: BNEP socket layer initialized Mar 18 22:17:36 localhost bluetoothd[8787]: Bluetooth management interface 1.7 initialized Mar 18 22:17:36 localhost NetworkManager[8346]: <info> use BlueZ version 5 Mar 18 22:17:37 localhost ModemManager[8385]: <warn> Couldn't find support for device at '/sys/devices/pci0000:00/0000:00:1c.1/0000:03:00.0': not supported by any plugin Mar 18 22:17:37 localhost ModemManager[8385]: <warn> Couldn't find support for device at '/sys/devices/pci0000:00/0000:00:1c.2/0000:04:00.0': not supported by any plugin Mar 18 22:17:39 localhost dbus[7763]: [system] Activating service name='org.freedesktop.ColorManager' (using servicehelper) Mar 18 22:17:39 localhost dbus[7763]: [system] Successfully activated service 'org.freedesktop.ColorManager' Mar 18 22:17:41 localhost kernel: nf_conntrack: automatic helper assignment is deprecated and it will be removed soon. Use the iptables CT target to attach helpers instead. Mar 18 22:17:43 localhost kernel: [UFW BLOCK] IN=eth0 OUT= MAC= SRC=fe80:0000:0000:0000:725a:b6ff:fe3e:c18a DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=0 PROTO=UDP SPT=8612 DPT=8612 LEN=24 Mar 18 22:17:43 localhost kernel: [UFW BLOCK] IN=eth0 OUT= MAC= SRC=fe80:0000:0000:0000:725a:b6ff:fe3e:c18a DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=0 PROTO=UDP SPT=8612 DPT=8612 LEN=24 Mar 18 22:17:43 localhost laptop-mode[8947]: Laptop mode Mar 18 22:17:43 localhost laptop-mode[8948]: enabled, not active Mar 18 22:17:58 localhost kernel: Installing knfsd (copyright (C) 1996 o...@monad.swb.de). Mar 18 22:17:58 localhost rpc.mountd[9741]: Version 1.3.2 starting Mar 18 22:17:59 localhost kernel: NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory Mar 18 22:17:59 localhost kernel: NFSD: starting 90-second grace period (net ffffffff81c3d580) Mar 18 22:17:58 localhost sm-notify[9760]: Version 1.3.2 starting Mar 18 22:17:58 localhost sm-notify[9760]: Already notifying clients; Exiting! Mar 18 22:18:00 localhost sshd[9816]: Server listening on 0.0.0.0 port 22. Mar 18 22:18:00 localhost sshd[9816]: Server listening on :: port 22. Mar 18 22:18:00 localhost cron[9870]: (CRON) STARTUP (V5.0) Mar 18 22:18:00 localhost su[9899]: Successful su for fitzcarraldo by root Mar 18 22:18:00 localhost su[9899]: + /dev/console root:fitzcarraldo Mar 18 22:18:00 localhost su[9899]: pam_unix(su:session): session opened for user fitzcarraldo by (uid=0) Mar 18 22:18:01 localhost dbus[7763]: [system] Activating service name='org.freedesktop.RealtimeKit1' (using servicehelper) Mar 18 22:18:01 localhost dbus[7763]: [system] Successfully activated service 'org.freedesktop.RealtimeKit1' Mar 18 22:18:01 localhost rtkit-daemon[9906]: Successfully called chroot. Mar 18 22:18:01 localhost rtkit-daemon[9906]: Successfully dropped privileges. Mar 18 22:18:01 localhost rtkit-daemon[9906]: Successfully limited resources. Mar 18 22:18:01 localhost rtkit-daemon[9906]: Running. Mar 18 22:18:01 localhost rtkit-daemon[9906]: Watchdog thread running. Mar 18 22:18:01 localhost rtkit-daemon[9906]: Canary thread running. Mar 18 22:18:01 localhost kdm[8833]: :0[8833]: pam_unix(kde:session): session opened for user fitzcarraldo by (uid=0) Mar 18 22:18:01 localhost kdm[8833]: :0[8833]: pam_ck_connector(kde:session): nox11 mode, ignoring PAM_TTY :0 Mar 18 22:18:03 localhost pulseaudio[9904]: [pulseaudio] sink.c: Default and alternate sample rates are the same. Mar 18 22:18:03 localhost rtkit-daemon[9906]: Supervising 0 threads of 0 processes of 1 users. Mar 18 22:18:03 localhost rtkit-daemon[9906]: Supervising 0 threads of 0 processes of 1 users. Mar 18 22:18:03 localhost rtkit-daemon[9906]: Supervising 0 threads of 0 processes of 1 users. Mar 18 22:18:03 localhost rtkit-daemon[9906]: Supervising 0 threads of 0 processes of 1 users. Mar 18 22:18:03 localhost rtkit-daemon[9906]: Supervising 0 threads of 0 processes of 1 users. Mar 18 22:18:03 localhost pulseaudio[9904]: [pulseaudio] source.c: Default and alternate sample rates are the same. Mar 18 22:18:03 localhost rtkit-daemon[9906]: Supervising 0 threads of 0 processes of 1 users. Mar 18 22:18:03 localhost rtkit-daemon[9906]: Supervising 0 threads of 0 processes of 1 users. Mar 18 22:18:03 localhost rtkit-daemon[9906]: Supervising 0 threads of 0 processes of 1 users. Mar 18 22:18:03 localhost rtkit-daemon[9906]: Supervising 0 threads of 0 processes of 1 users. Mar 18 22:18:03 localhost rtkit-daemon[9906]: Supervising 0 threads of 0 processes of 1 users. Mar 18 22:18:03 localhost pulseaudio[9904]: [pulseaudio] module-jackdbus-detect.c: Unable to contact D-Bus session bus: org.freedesktop.DBus.Error.NotSupported: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11 Mar 18 22:18:03 localhost pulseaudio[9904]: [pulseaudio] module.c: Failed to load module "module-jackdbus-detect" (argument: "channels=2"): initialization failed. Mar 18 22:18:04 localhost pulseaudio[9904]: [pulseaudio] main.c: Module load failed. Mar 18 22:18:04 localhost pulseaudio[9904]: [pulseaudio] server-lookup.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NotSupported: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11 Mar 18 22:18:04 localhost pulseaudio[9904]: [pulseaudio] main.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NotSupported: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11 Mar 18 22:18:04 localhost su[9899]: pam_unix(su:session): session closed for user fitzcarraldo Mar 18 22:18:04 localhost su[9964]: Successful su for fitzcarraldo by root Mar 18 22:18:04 localhost su[9964]: + /dev/console root:fitzcarraldo Mar 18 22:18:04 localhost su[9964]: pam_unix(su:session): session opened for user fitzcarraldo by (uid=0) Mar 18 22:18:04 localhost su[9964]: pam_unix(su:session): session closed for user fitzcarraldo Mar 18 22:18:04 localhost su[9966]: Successful su for fitzcarraldo by root Mar 18 22:18:04 localhost su[9966]: + /dev/console root:fitzcarraldo Mar 18 22:18:04 localhost su[9966]: pam_unix(su:session): session opened for user fitzcarraldo by (uid=0) Mar 18 22:18:04 localhost su[9966]: pam_unix(su:session): session closed for user fitzcarraldo Mar 18 22:18:04 localhost su[9968]: Successful su for fitzcarraldo by root Mar 18 22:18:04 localhost su[9968]: + /dev/console root:fitzcarraldo Mar 18 22:18:04 localhost su[9968]: pam_unix(su:session): session opened for user fitzcarraldo by (uid=0) Mar 18 22:18:04 localhost su[9968]: pam_unix(su:session): session closed for user fitzcarraldo Mar 18 22:18:15 localhost dbus[7763]: [system] Activating service name='org.freedesktop.UPower' (using servicehelper) Mar 18 22:18:15 localhost dbus[7763]: [system] Successfully activated service 'org.freedesktop.UPower' Mar 18 22:18:17 localhost dbus[7763]: [system] Activating service name='org.freedesktop.UDisks2' (using servicehelper) Mar 18 22:18:17 localhost udisksd[10120]: udisks daemon version 2.1.4 starting Mar 18 22:18:17 localhost dbus[7763]: [system] Successfully activated service 'org.freedesktop.UDisks2' Mar 18 22:18:17 localhost udisksd[10120]: Acquired the name org.freedesktop.UDisks2 on the system message bus Mar 18 22:18:19 localhost kernel: [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:00:16:fa:25:28:01:08:00 SRC=0.0.0.0 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=0 PROTO=2 Mar 18 22:18:54 localhost hp-systray[10453]: hp-systray[10453]: error: option -s not recognized Mar 18 22:18:55 localhost rtkit-daemon[9906]: Successfully made thread 10469 of process 10469 (/usr/bin/pulseaudio) owned by '1000' high priority at nice level -11. Mar 18 22:18:55 localhost rtkit-daemon[9906]: Supervising 1 threads of 1 processes of 1 users. Mar 18 22:18:55 localhost pulseaudio[10469]: [pulseaudio] pid.c: Daemon already running. Mar 18 22:18:56 localhost rtkit-daemon[9906]: Successfully made thread 10485 of process 10485 (/usr/bin/pulseaudio) owned by '1000' high priority at nice level -11. Mar 18 22:18:56 localhost rtkit-daemon[9906]: Supervising 1 threads of 1 processes of 1 users. Mar 18 22:18:56 localhost pulseaudio[10485]: [pulseaudio] pid.c: Daemon already running. Mar 18 22:19:04 localhost polkitd[7911]: Registered Authentication Agent for unix-session:/org/freedesktop/ConsoleKit/Session1 (system bus name :1.52 [/usr/lib64/kde4/libexec/polkit-kde-authentication-agent-1], object path /org/kde/PolicyKit1/AuthenticationAgent, locale en_GB.UTF-8) Mar 18 22:19:10 localhost su[10569]: Successful su for root by fitzcarraldo Mar 18 22:19:10 localhost su[10569]: + /dev/pts/0 fitzcarraldo:root Mar 18 22:19:10 localhost su[10569]: pam_unix(su:session): session opened for user root by fitzcarraldo(uid=1000) Mar 18 22:19:26 localhost pulseaudio[9904]: [alsa-sink-ALC272 Analog] alsa-sink.c: ALSA woke us up to write new data to the device, but there was actually nothing to write! Mar 18 22:19:26 localhost pulseaudio[9904]: [alsa-sink-ALC272 Analog] alsa-sink.c: Most likely this is a bug in the ALSA driver 'snd_hda_intel'. Please report this issue to the ALSA developers. Mar 18 22:19:26 localhost pulseaudio[9904]: [alsa-sink-ALC272 Analog] alsa-sink.c: We were woken up with POLLOUT set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail. Mar 18 22:20:01 localhost cron[10670]: (root) CMD (test -x /usr/sbin/run-crons && /usr/sbin/run-crons) In the cases when NetworkManager activates a connection correctly and there is no invalid second eth0 connection, the log contains a message like the following: Mar 16 22:23:47 localhost NetworkManager[6688]: <info> Auto-activating connection 'eth0'. Notice there is no such message in the message log output listed above. The only way I can be sure of preventing NetworkManager creating an invalid second eth0 connection is to disable IPv6 system-wide by uncommenting the line "alias net-pf-10 off" in the file /etc/modprobe.d/aliases.conf. So, to me, this looks like a bug in NetworkManager. By the way, in my previous comment (Message #136) I quoted the wrong contents of my NetworkManager.conf file. In fact the contents are as follows: [main] plugins=keyfile dhcp=dhcpcd no-auto-default=eth0 [keyfile] hostname=meshedgedx -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org