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 ~
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1586528
Title:
Avahi-daemon withdraws address record
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https://bugs.launchpad.net/ubuntu/+source/avahi/+bug/1586528/+subscriptions
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