Ethernet-соединение прерывается на 10-20 секунд каждые 20 минут

Раз или два в час соединение с Ethernet на моей машине с Ubuntu будет прерываться:

$ ping google.com (nothing happens) 

Через 10-20 секунд (хотя иногда и дольше) он волшебным образом вернется.

Во время отключений я не могу пропинговать google.com или IP-адрес, поэтому не думаю, что это проблема DNS. Я пробовал несколько вещей для отладки:

1. Rebooted
2. Обновлены / обновлены все пакеты.
3. Деинсталлировано и переустановлено network-manager.
4. Поменяны местами кабели Ethernet.

Мои коллеги подключены к тому же маршрутизатору, что и я, и не сталкиваются с этой проблемой, поэтому, похоже, что-то с моей машиной.

Есть идеи? Я свежая из них, и это становится довольно разочаровывающим!

Вот целая куча информации о моей системе:

$ lspci 00:00.0 Host bridge: Intel Corporation Device 591f (rev 05) 00:02.0 VGA compatible controller: Intel Corporation Device 5912 (rev 04) 00:14.0 USB controller: Intel Corporation 200 Series PCH USB 3.0 xHCI Controller 00:14.2 Signal processing controller: Intel Corporation 200 Series PCH Thermal Subsystem 00:16.0 Communication controller: Intel Corporation 200 Series PCH CSME HECI #1 00:17.0 SATA controller: Intel Corporation 200 Series PCH SATA controller [AHCI mode] 00:1f.0 ISA bridge: Intel Corporation 200 Series PCH LPC Controller (H270) 00:1f.2 Memory controller: Intel Corporation 200 Series PCH PMC 00:1f.3 Audio device: Intel Corporation 200 Series PCH HD Audio 00:1f.4 SMBus: Intel Corporation 200 Series PCH SMBus Controller 00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (2) I219-V  $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 17.04 Release: 17.04 Codename: zesty  $ ifconfig docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 inet 172.17.0.1 netmask 255.255.0.0 broadcast 0.0.0.0 inet6 fe80::42:e7ff:fe8d:d514 prefixlen 64 scopeid 0x20<link> ether 02:42:e7:8d:d5:14 txqueuelen 0 (Ethernet) RX packets 25739 bytes 1591975 (1.5 MB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 116624 bytes 169185651 (169.1 MB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0  enp0s31f6: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 10.201.32.57 netmask 255.255.255.0 broadcast 10.201.32.255 inet6 fe80::7285:c2ff:fe2a:efa8 prefixlen 64 scopeid 0x20<link> ether 70:85:c2:2a:ef:a8 txqueuelen 1000 (Ethernet) RX packets 1938458 bytes 1438227394 (1.4 GB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 1442649 bytes 772299655 (772.2 MB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 device interrupt 16 memory 0xdf000000-df020000   lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10<host> loop txqueuelen 1000 (Local Loopback) RX packets 181354 bytes 50978753 (50.9 MB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 181354 bytes 50978753 (50.9 MB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0  $ ethtool enp0s31f6 Settings for enp0s31f6: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full  100baseT/Half 100baseT/Full  1000baseT/Full  Supported pause frame use: No Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full  100baseT/Half 100baseT/Full  1000baseT/Full  Advertised pause frame use: No Advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: Twisted Pair PHYAD: 1 Transceiver: internal Auto-negotiation: on MDI-X: on (auto) Cannot get wake-on-lan settings: Operation not permitted Current message level: 0x00000007 (7) drv probe link Link detected: yes 

Вот что я вижу /var/log/syslogпримерно во время разрыва соединения:

Jul 7 12:44:02 dv systemd-resolved[1259]: Switching to DNS server 10.201.1.18 for interface enp0s31f6. Jul 7 12:44:03 dv systemd-resolved[1259]: Switching to DNS server 10.201.1.15 for interface enp0s31f6. Jul 7 12:44:04 dv systemd-resolved[1259]: Switching to DNS server 10.201.1.18 for interface enp0s31f6. Jul 7 12:44:04 dv systemd-resolved[1259]: Switching to DNS server 10.201.1.15 for interface enp0s31f6. Jul 7 12:44:05 dv systemd-resolved[1259]: Switching to DNS server 10.201.1.18 for interface enp0s31f6. Jul 7 12:44:06 dv systemd-resolved[1259]: Switching to DNS server 10.201.1.15 for interface enp0s31f6. Jul 7 12:44:07 dv systemd-resolved[1259]: Switching to DNS server 10.201.1.18 for interface enp0s31f6. Jul 7 12:44:09 dv systemd-resolved[1259]: Switching to DNS server 10.201.1.15 for interface enp0s31f6. Jul 7 12:44:11 dv systemd-resolved[1259]: Switching to DNS server 10.201.1.18 for interface enp0s31f6. Jul 7 12:44:11 dv systemd-resolved[1259]: Using degraded feature set (UDP+EDNS0+DO) for DNS server 10.201.1.18. Jul 7 12:44:13 dv systemd-resolved[1259]: Switching to DNS server 10.201.1.15 for interface enp0s31f6. Jul 7 12:44:15 dv systemd-resolved[1259]: Switching to DNS server 10.201.1.18 for interface enp0s31f6. Jul 7 12:44:17 dv systemd-resolved[1259]: Switching to DNS server 10.201.1.15 for interface enp0s31f6. Jul 7 12:44:18 dv systemd-resolved[1259]: Switching to DNS server 10.201.1.18 for interface enp0s31f6. Jul 7 12:44:18 dv systemd-resolved[1259]: Using degraded feature set (UDP) for DNS server 10.201.1.18. Jul 7 12:44:18 dv systemd-resolved[1259]: Switching to DNS server 10.201.1.15 for interface enp0s31f6. Jul 7 12:44:20 dv systemd-resolved[1259]: Switching to DNS server 10.201.1.18 for interface enp0s31f6. Jul 7 12:44:22 dv systemd-resolved[1259]: Switching to DNS server 10.201.1.15 for interface enp0s31f6.