Беда в связи с роутером DHCP?

В моей домашней сети есть проблемы с компьютерами linux, двумя ubuntu и двумя mint. Я посмотрел на файлы журнала и искал в Интернете решение. Я не могу найти усы решения. Один из мятных компьютеров нормально подключается, остальные три появляются с такой же проблемой. PS3, Mac и все Windows нормально подключаются.

Я пробовал:

• Отключение IPv6 (я не думаю, что мой маршрутизатор поддерживает IPv6)
• Использование устройства USB wlan, внутреннего устройства WLAN и кабеля Ethernet (все это работает в других сетях / окнах)

Так что я подозреваю, что это проблема с моими компьютерами, которые не могут общаться с моим маршрутизатором на общем языке. Но я не большой эксперт. Я надеюсь, что кто-то захочет взглянуть на мой лог-файл, я думаю, что ответ здесь.

Jun 25 22:57:01 joshua-Ideapad-Z570 NetworkManager[852]: <info> (eth0): device state change: ip-config -> disconnected (reason 'user-requested') [70 30 39]
Jun 25 22:57:01 joshua-Ideapad-Z570 NetworkManager[852]: <info> (eth0): deactivating device (reason 'user-requested') [39]
Jun 25 22:57:01 joshua-Ideapad-Z570 NetworkManager[852]: <info> (eth0): canceled DHCP transaction, DHCP client pid 3459
Jun 25 22:57:04 joshua-Ideapad-Z570 NetworkManager[852]: <info> Activation (eth0) starting connection 'Wired connection 1'
Jun 25 22:57:04 joshua-Ideapad-Z570 NetworkManager[852]: <info> (eth0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Jun 25 22:57:04 joshua-Ideapad-Z570 NetworkManager[852]: <info> Activation (eth0) Stage 1 of 5 (Device Prepare) scheduled...
Jun 25 22:57:04 joshua-Ideapad-Z570 NetworkManager[852]: <info> Activation (eth0) Stage 1 of 5 (Device Prepare) started...
Jun 25 22:57:04 joshua-Ideapad-Z570 NetworkManager[852]: <info> Activation (eth0) Stage 2 of 5 (Device Configure) scheduled...
Jun 25 22:57:04 joshua-Ideapad-Z570 NetworkManager[852]: <info> Activation (eth0) Stage 1 of 5 (Device Prepare) complete.
Jun 25 22:57:04 joshua-Ideapad-Z570 NetworkManager[852]: <info> Activation (eth0) Stage 2 of 5 (Device Configure) starting...
Jun 25 22:57:04 joshua-Ideapad-Z570 NetworkManager[852]: <info> (eth0): device state change: prepare -> config (reason 'none') [40 50 0]
Jun 25 22:57:04 joshua-Ideapad-Z570 NetworkManager[852]: <info> Activation (eth0) Stage 2 of 5 (Device Configure) successful.
Jun 25 22:57:04 joshua-Ideapad-Z570 NetworkManager[852]: <info> Activation (eth0) Stage 3 of 5 (IP Configure Start) scheduled.
Jun 25 22:57:04 joshua-Ideapad-Z570 NetworkManager[852]: <info> Activation (eth0) Stage 2 of 5 (Device Configure) complete.
Jun 25 22:57:04 joshua-Ideapad-Z570 NetworkManager[852]: <info> Activation (eth0) Stage 3 of 5 (IP Configure Start) started...
Jun 25 22:57:04 joshua-Ideapad-Z570 NetworkManager[852]: <info> (eth0): device state change: config -> ip-config (reason 'none') [50 70 0]
Jun 25 22:57:04 joshua-Ideapad-Z570 NetworkManager[852]: <info> Activation (eth0) Beginning DHCPv4 transaction (timeout in 45 seconds)
Jun 25 22:57:04 joshua-Ideapad-Z570 NetworkManager[852]: <info> dhclient started with pid 3465
Jun 25 22:57:04 joshua-Ideapad-Z570 NetworkManager[852]: <info> Activation (eth0) Beginning IP6 addrconf.
Jun 25 22:57:04 joshua-Ideapad-Z570 dhclient: Internet Systems Consortium DHCP Client 4.1-ESV-R4
Jun 25 22:57:04 joshua-Ideapad-Z570 dhclient: Copyright 2004-2011 Internet Systems Consortium.
Jun 25 22:57:04 joshua-Ideapad-Z570 dhclient: All rights reserved.
Jun 25 22:57:04 joshua-Ideapad-Z570 dhclient: For info, please visit https://www.isc.org/software/dhcp/
Jun 25 22:57:04 joshua-Ideapad-Z570 dhclient: 
Jun 25 22:57:04 joshua-Ideapad-Z570 NetworkManager[852]: <info> Activation (eth0) Stage 3 of 5 (IP Configure Start) complete.
Jun 25 22:57:04 joshua-Ideapad-Z570 NetworkManager[852]: <info> (eth0): DHCPv4 state changed nbi -> preinit
Jun 25 22:57:04 joshua-Ideapad-Z570 dhclient: Listening on LPF/eth0/f6:d1:f2:c4:b1:6f
Jun 25 22:57:04 joshua-Ideapad-Z570 dhclient: Sending on   LPF/eth0/f6:d1:f2:c4:b1:6f
Jun 25 22:57:04 joshua-Ideapad-Z570 dhclient: Sending on   Socket/fallback
Jun 25 22:57:04 joshua-Ideapad-Z570 dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
Jun 25 22:57:04 joshua-Ideapad-Z570 dhclient: Discarding packet with bogus hlen.
Jun 25 22:57:04 joshua-Ideapad-Z570 dhclient: Discarding packet with bogus hlen.
Jun 25 22:57:07 joshua-Ideapad-Z570 dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 4
Jun 25 22:57:08 joshua-Ideapad-Z570 dhclient: Discarding packet with bogus hlen.
Jun 25 22:57:08 joshua-Ideapad-Z570 dhclient: Discarding packet with bogus hlen.
Jun 25 22:57:11 joshua-Ideapad-Z570 dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8
Jun 25 22:57:11 joshua-Ideapad-Z570 dhclient: Discarding packet with bogus hlen.
Jun 25 22:57:11 joshua-Ideapad-Z570 dhclient: Discarding packet with bogus hlen.
Jun 25 22:57:19 joshua-Ideapad-Z570 dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 10
Jun 25 22:57:19 joshua-Ideapad-Z570 dhclient: Discarding packet with bogus hlen.
Jun 25 22:57:19 joshua-Ideapad-Z570 dhclient: Discarding packet with bogus hlen.
Jun 25 22:57:24 joshua-Ideapad-Z570 NetworkManager[852]: <info> (eth0): IP6 addrconf timed out or failed.
Jun 25 22:57:24 joshua-Ideapad-Z570 NetworkManager[852]: <info> Activation (eth0) Stage 4 of 5 (IPv6 Configure Timeout) scheduled...
Jun 25 22:57:24 joshua-Ideapad-Z570 NetworkManager[852]: <info> Activation (eth0) Stage 4 of 5 (IPv6 Configure Timeout) started...
Jun 25 22:57:24 joshua-Ideapad-Z570 NetworkManager[852]: <info> Activation (eth0) Stage 4 of 5 (IPv6 Configure Timeout) complete.
Jun 25 22:57:28 joshua-Ideapad-Z570 dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
Jun 25 22:57:28 joshua-Ideapad-Z570 dhclient: Discarding packet with bogus hlen.
Jun 25 22:57:28 joshua-Ideapad-Z570 dhclient: Discarding packet with bogus hlen.
Jun 25 22:57:29 joshua-Ideapad-Z570 dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 10
Jun 25 22:57:29 joshua-Ideapad-Z570 dhclient: Discarding packet with bogus hlen.
Jun 25 22:57:29 joshua-Ideapad-Z570 dhclient: Discarding packet with bogus hlen.
Jun 25 22:57:31 joshua-Ideapad-Z570 dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 5
Jun 25 22:57:31 joshua-Ideapad-Z570 dhclient: Discarding packet with bogus hlen.
Jun 25 22:57:31 joshua-Ideapad-Z570 dhclient: Discarding packet with bogus hlen.
Jun 25 22:57:36 joshua-Ideapad-Z570 dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 11
Jun 25 22:57:36 joshua-Ideapad-Z570 dhclient: Discarding packet with bogus hlen.
Jun 25 22:57:36 joshua-Ideapad-Z570 dhclient: Discarding packet with bogus hlen.
Jun 25 22:57:39 joshua-Ideapad-Z570 dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 13
Jun 25 22:57:39 joshua-Ideapad-Z570 dhclient: Discarding packet with bogus hlen.
Jun 25 22:57:39 joshua-Ideapad-Z570 dhclient: Discarding packet with bogus hlen.
Jun 25 22:57:47 joshua-Ideapad-Z570 dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 14
Jun 25 22:57:47 joshua-Ideapad-Z570 dhclient: Discarding packet with bogus hlen.
Jun 25 22:57:47 joshua-Ideapad-Z570 dhclient: Discarding packet with bogus hlen.
Jun 25 22:57:49 joshua-Ideapad-Z570 NetworkManager[852]: <warn> (eth0): DHCPv4 request timed out.
Jun 25 22:57:49 joshua-Ideapad-Z570 NetworkManager[852]: <info> (eth0): canceled DHCP transaction, DHCP client pid 3465
Jun 25 22:57:49 joshua-Ideapad-Z570 NetworkManager[852]: <info> Activation (eth0) Stage 4 of 5 (IPv4 Configure Timeout) scheduled...
Jun 25 22:57:49 joshua-Ideapad-Z570 NetworkManager[852]: <info> Activation (eth0) Stage 4 of 5 (IPv4 Configure Timeout) started...

Если я могу добавить что-нибудь еще, что может помочь в диагностике, пожалуйста, добавьте комментарий.