I have an update on the same problem as seen on another computer - ethel,
connected to an A.D.S.L. terminal adaptor (router). More details of the
computer follow the commands and log excerpts. I think that this update
suggests that avahi-daemon is the messenger, telling us that the NetworkManager
has failed.
/var/log/syslog:Aug 24 09:49:13 ethel avahi-daemon[1042]: Withdrawing address
record for 192.168.41.113 on enp2s0.
/var/log/syslog:Aug 24 09:49:13 ethel avahi-daemon[1042]: Leaving mDNS
multicast group on interface enp2s0.IPv4 with address 192.168.41.113.
/var/log/syslog:Aug 24 09:49:13 ethel avahi-daemon[1042]: Interface enp2s0.IPv4
no longer relevant for mDNS.
... some hours later ....
[Mint] graham@ethel $ ip a s
...
2: enp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP
group default qlen 1000
link/ether d4:3d:7e:9b:55:7a brd ff:ff:ff:ff:ff:ff
inet6 fe80::af3c:f15c:e5aa:34ca/64 scope link
valid_lft forever preferred_lft forever
Thu Aug 24 18:53:38 ~
[Mint] graham@ethel $ /etc/init.d/network-manager status
* NetworkManager.service - Network Manager
Loaded: loaded (/lib/systemd/system/NetworkManager.service; enabled; vendor
preset: enabled)
Active: active (running) since Sat 2017-07-15 19:27:36 BST; 1 months 9 days
ago
Docs: man:NetworkManager(8)
Main PID: 1034 (NetworkManager)
CGroup: /system.slice/NetworkManager.service
├─1034 /usr/sbin/NetworkManager --no-daemon
├─1402 /usr/sbin/dnsmasq --no-resolv --keep-in-foreground --no-hos...
└─4973 /sbin/dhclient -d -q -sf /usr/lib/NetworkManager/nm-dhcp-he...
Aug 24 18:53:47 ethel dhclient[4973]: send_packet: please consult README fi...s.
Aug 24 18:53:47 ethel dhclient[4973]: dhclient.c:2386: Failed to send 300 b...e.
Aug 24 18:53:58 ethel dhclient[4973]: DHCPREQUEST of 192.168.41.113 on enp2...c)
Aug 24 18:53:58 ethel dhclient[4973]: send_packet: Network is unreachable
Aug 24 18:53:58 ethel dhclient[4973]: send_packet: please consult README fi...s.
Aug 24 18:53:58 ethel dhclient[4973]: dhclient.c:2386: Failed to send 300 b...e.
Aug 24 18:54:07 ethel dhclient[4973]: DHCPREQUEST of 192.168.41.113 on enp2...c)
Aug 24 18:54:07 ethel dhclient[4973]: send_packet: Network is unreachable
Aug 24 18:54:07 ethel dhclient[4973]: send_packet: please consult README fi...s.
Aug 24 18:54:07 ethel dhclient[4973]: dhclient.c:2386: Failed to send 300 b...e.
Hint: Some lines were ellipsized, use -l to show in full.
Thu Aug 24 18:54:08 ~
[Mint] graham@ethel $ /etc/init.d/avahi-daemon status
* avahi-daemon.service - Avahi mDNS/DNS-SD Stack
Loaded: loaded (/lib/systemd/system/avahi-daemon.service; enabled; vendor
preset: enabled)
Active: active (running) since Sat 2017-07-15 19:27:34 BST; 1 months 9 days
ago
Main PID: 1042 (avahi-daemon)
Status: "avahi-daemon 0.6.32-rc starting up."
CGroup: /system.slice/avahi-daemon.service
├─1042 avahi-daemon: running [ethel.local]
└─1070 avahi-daemon: chroot helper
Aug 19 14:15:25 ethel avahi-daemon[1042]: Interface enp2s0.IPv6 no longer re....
Aug 19 14:15:29 ethel avahi-daemon[1042]: Joining mDNS multicast group on in....
Aug 19 14:15:29 ethel avahi-daemon[1042]: New relevant interface enp2s0.IPv4....
Aug 19 14:15:29 ethel avahi-daemon[1042]: Registering new address record for....
Aug 19 14:15:31 ethel avahi-daemon[1042]: Joining mDNS multicast group on in....
Aug 19 14:15:31 ethel avahi-daemon[1042]: New relevant interface enp2s0.IPv6....
Aug 19 14:15:31 ethel avahi-daemon[1042]: Registering new address record for....
Aug 24 09:49:13 ethel avahi-daemon[1042]: Withdrawing address record for 192....
Aug 24 09:49:13 ethel avahi-daemon[1042]: Leaving mDNS multicast group on in....
Aug 24 09:49:13 ethel avahi-daemon[1042]: Interface enp2s0.IPv4 no longer re....
Hint: Some lines were ellipsized, use -l to show in full.
Thu Aug 24 18:55:25 ~
[Mint] graham@ethel $ sudo /etc/init.d/avahi-daemon restart
[ ok ] Restarting avahi-daemon (via systemctl): avahi-daemon.service.
Thu Aug 24 18:55:51 ~
... note that the reports above cover five days ...
[Mint] liz@ethel $ ip a s
...
2: enp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP
group default qlen 1000
link/ether d4:3d:7e:9b:55:7a brd ff:ff:ff:ff:ff:ff
inet6 fe80::af3c:f15c:e5aa:34ca/64 scope link
valid_lft forever preferred_lft forever
Thu Aug 24 18:56:07 ~
... note that restarting avahi-daemon has not provided a connection ...
[Mint] graham@ethel $ sudo /etc/init.d/network-manager restart
[ ok ] Restarting network-manager (via systemctl): network-manager.service.
Thu Aug 24 18:56:45 ~
[Mint] liz@ethel $ ip a s
...
2: enp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP
group default qlen 1000
link/ether d4:3d:7e:9b:55:7a brd ff:ff:ff:ff:ff:ff
inet 192.168.41.113/24 brd 192.168.41.255 scope global dynamic enp2s0
valid_lft 86397sec preferred_lft 86397sec
inet6 fe80::af3c:f15c:e5aa:34ca/64 scope link
valid_lft forever preferred_lft forever
Thu Aug 24 18:56:50 ~
... it is the restarting of network-manager that restores the connection
...
[Mint] graham@ethel $ /etc/init.d/network-manager status
* NetworkManager.service - Network Manager
Loaded: loaded (/lib/systemd/system/NetworkManager.service; enabled; vendor
preset: enabled)
Active: active (running) since Thu 2017-08-24 18:56:45 BST; 31s ago
Docs: man:NetworkManager(8)
Main PID: 376 (NetworkManager)
CGroup: /system.slice/NetworkManager.service
├─376 /usr/sbin/NetworkManager --no-daemon
├─416 /sbin/dhclient -d -q -sf /usr/lib/NetworkManager/nm-dhcp-hel...
└─433 /usr/sbin/dnsmasq --no-resolv --keep-in-foreground --no-host...
Aug 24 18:56:47 ethel dnsmasq[433]: started, version 2.75 cache disabled
Aug 24 18:56:47 ethel dnsmasq[433]: compile time options: IPv6 GNU-getopt D...fy
Aug 24 18:56:47 ethel dnsmasq[433]: DBus support enabled: connected to syst...us
Aug 24 18:56:47 ethel dnsmasq[433]: warning: no upstream servers configured
Aug 24 18:56:47 ethel NetworkManager[376]: <info> [1503597407.3243] dnsmasq...0
Aug 24 18:56:47 ethel dnsmasq[433]: setting upstream servers from DBus
Aug 24 18:56:47 ethel dnsmasq[433]: using nameserver 192.168.41.1#53(via enp2s0)
Aug 24 18:56:51 ethel NetworkManager[376]: <info> [1503597411.0778] manager...e
Aug 24 18:56:56 ethel NetworkManager[376]: <info> [1503597416.0785] manager...d
Aug 24 18:56:56 ethel NetworkManager[376]: <info> [1503597416.0785] manager...d
Hint: Some lines were ellipsized, use -l to show in full.
Thu Aug 24 18:57:16 ~
Here are some more details of the system.
[Mint] liz@ethel $ uname -a
Linux ethel 4.4.0-53-generic #74-Ubuntu SMP Fri Dec 2 15:59:10 UTC 2016 x86_64
x86_64 x86_64 GNU/Linux
Thu Aug 24 19:38:23 ~
[Mint] liz@ethel $ cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
Thu Aug 24 19:39:00 ~
[Mint] liz@ethel $ lspci | grep -i "net"
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI
Express Fast/Gigabit Ethernet controller (rev 05)
Thu Aug 24 19:39:47 ~
[Mint] liz@ethel $ cat /etc/os-release
NAME="Linux Mint"
VERSION="18.1 (Serena)"
ID=linuxmint
ID_LIKE=ubuntu
PRETTY_NAME="Linux Mint 18.1"
VERSION_ID="18.1"
HOME_URL="http://www.linuxmint.com/";
SUPPORT_URL="http://forums.linuxmint.com/";
BUG_REPORT_URL="http://bugs.launchpad.net/linuxmint/";
VERSION_CODENAME=serena
UBUNTU_CODENAME=xenial
Thu Aug 24 19:40:27 ~
--
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/1586528
Title:
Avahi-daemon withdraws address record
Status in avahi package in Ubuntu:
Invalid
Status in network-manager package in Ubuntu:
Confirmed
Bug description:
For some reason, if I leave my Ubuntu VM up for a prolonged period of
time the machine will lose connection to the network. ip addr shows
that the nic port no longer has an address and an examination of the
syslog shows this:
May 27 14:19:38 matt-VirtualBox avahi-daemon[590]: Withdrawing address record
for 10.0.2.15 on enp0s3.
May 27 14:19:38 matt-VirtualBox avahi-daemon[590]: Leaving mDNS multicast
group on interface enp0s3.IPv4 with address 10.0.2.15.
May 27 14:19:38 matt-VirtualBox avahi-daemon[590]: Interface enp0s3.IPv4 no
longer relevant for mDNS.
for no known reason.
The only reliable way to get the network to come back (that I have
found) is a full reboot.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: avahi-daemon 0.6.32~rc+dfsg-1ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Fri May 27 15:11:34 2016
InstallationDate: Installed on 2015-10-22 (218 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
SourcePackage: avahi
UpgradeStatus: Upgraded to xenial on 2016-03-30 (58 days ago)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/avahi/+bug/1586528/+subscriptions
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