Ничего не монимаю
1. Загружаю комп, 500Т присваивает ip и dns - инета нет
2. Выставляю в настройках сетевухи след. IP и DNS:
IP-Адрес: 192.168.1.2
Маска подсети: 255.255.255.0
Основной Шлюз: 192.168.1.1
DNS1: 213.140.228.218
DNS2: 213.140.231. 3
ИНЕТ ЕСТЬ
3. Ставлю опять получить всё автоматически - инет есть

Как сделать так, чтобы всё было автоматически и был инет, и после перезагрузки ничего не менялось?

Как настроена закладка DNS?

_________________
С уважением,
Бигаров Руслан.

В первом случае на автомате, во втором ручной, в третьем опять автомат...

Как настроена закладка DNS в модеме?

В меню DNS и стоит значение "DNS Relay Selection" равное "Use Auto Discovered DNS Server Only".
Поля в разделе User Configuration пусты

А в логе модем получает DNS от прова? Или если не трудно кинь лог, только все страницы.

Sep 8 12:00:06> Valid Configuration Tree
Sep 8 12:00:11> Firewall NAT service started
Sep 8 12:00:12> Bridge Created: br0
Sep 8 12:00:12> Bridge Interface Added: eth0
Sep 8 12:00:13> pppd 2.4.1 started by root, uid 0
Sep 8 12:00:13> WAN IP address 10.64.64.64
Sep 8 12:00:13> WAN gateway 10.112.112.112
Sep 8 12:00:15> DSL Carrier is training
Sep 8 12:00:25> DSL Carrier is down
Sep 8 12:00:35> DSL Carrier is up
Sep 8 12:00:36> pppd 2.4.1 started by root, uid 0
Sep 8 12:00:36> WAN IP address 10.64.64.64
Sep 8 12:00:36> WAN gateway 10.112.112.112
Sep 8 12:01:44> Connecting PPPoE socket: 00:14:a9:38:a9:1b 602d nas0 0x1000d3b8
Sep 8 12:01:44> Connect: ppp0 {--} nas0
Sep 8 12:01:47> Local IP address changed to 89.109.211.107
Sep 8 12:01:47> Remote IP address changed to 172.16.0.211
Sep 8 12:01:47> PPPoE Assigned IP Address:89.109.211.107
Sep 8 12:01:47> PPPoE Assigned Gateway IP Address: 172.16.0.211
Sep 20 22:04:48> Terminating connection due to lack of activity.
Sep 20 22:04:48> Connection terminated.
Sep 20 22:04:48> Doing disconnect
Sep 20 22:06:00> Connecting PPPoE socket: 00:14:a9:38:a9:1b 672d nas0 0x1000d3b8
Sep 20 22:06:00> Connect: ppp0 {--} nas0
Sep 20 22:06:13> CHAP authentication failed
Sep 20 22:06:13> Connection terminated.
Sep 20 22:06:13> Doing disconnect
Sep 20 22:06:45> Connecting PPPoE socket: 00:14:a9:38:a9:1b 6a2d nas0 0x1000d3b8
Sep 20 22:06:45> Connect: ppp0 {--} nas0
Sep 20 22:08:19> Terminating connection due to lack of activity.
Sep 20 22:08:19> Connection terminated.
Sep 20 22:08:19> Doing disconnect
Sep 20 22:08:35> Connecting PPPoE socket: 00:14:a9:38:a9:1b 6d2d nas0 0x1000d3b8
Sep 20 22:08:35> Connect: ppp0 {--} nas0
Sep 20 22:18:37> Modem hangup
Sep 20 22:18:37> Connection terminated.
Sep 20 22:18:37> Doing disconnect
Sep 20 22:19:21> Connecting PPPoE socket: 00:14:a9:38:a9:1b 792d nas0 0x1000d3b8
Sep 20 22:19:21> Connect: ppp0 {--} nas0
Sep 20 22:21:39> Terminating connection due to lack of activity.
Sep 20 22:21:39> Connection terminated.
Sep 20 22:21:39> Doing disconnect
Sep 20 22:23:10> Connecting PPPoE socket: 00:14:a9:38:a9:1b 7d2d nas0 0x1000d3b8
Sep 20 22:23:10> Connect: ppp0 {--} nas0
Sep 20 22:31:18> Terminating connection due to lack of activity.
Sep 20 22:31:18> Connection terminated.
Sep 20 22:31:18> Doing disconnect
Sep 20 22:33:33> Connecting PPPoE socket: 00:14:a9:38:a9:1b 8f2d nas0 0x1000d3b8
Sep 20 22:33:33> Connect: ppp0 {--} nas0
Sep 20 22:37:40> Terminating connection due to lack of activity.
Sep 20 22:37:40> Connection terminated.
Sep 20 22:37:40> Doing disconnect
Sep 20 22:38:12> Connecting PPPoE socket: 00:14:a9:38:a9:1b 9c2d nas0 0x1000d3b8
Sep 20 22:38:12> Connect: ppp0 {--} nas0
Sep 20 22:51:53> DSL Carrier is down
Sep 20 22:52:13> DSL Carrier is training
Sep 20 22:52:23> DSL Carrier is up
Sep 20 22:52:29> Connection terminated.
Sep 20 22:52:29> Doing disconnect
Sep 20 22:52:30> pppd 2.4.1 started by root, uid 0
Sep 20 22:52:30> WAN IP address 10.64.64.64
Sep 20 22:52:30> WAN gateway 10.112.112.112
Sep 20 22:52:30> Connecting PPPoE socket: 00:14:a9:38:a9:1b ab2d nas0 0x1000d3b8
Sep 20 22:52:30> Connect: ppp0 {--} nas0
Sep 20 22:52:33> Local IP address changed to 89.109.211.107
Sep 20 22:52:33> PPPoE Assigned IP Address:89.109.211.107
Sep 20 22:52:33> Remote IP address changed to 172.16.0.211
Sep 20 22:52:33> PPPoE Assigned Gateway IP Address: 172.16.0.211
Sep 20 23:08:35> Terminating connection due to lack of activity.
Sep 20 23:08:35> Connection terminated.
Sep 20 23:08:35> Doing disconnect
Sep 20 23:10:07> Connecting PPPoE socket: 00:14:a9:38:a9:1b b92d nas0 0x1000d3b8
Sep 20 23:10:07> Connect: ppp0 {--} nas0
Sep 20 23:20:02> Terminating connection due to lack of activity.
Sep 20 23:20:02> Connection terminated.
Sep 20 23:20:02> Doing disconnect
Sep 20 23:20:44> Connecting PPPoE socket: 00:14:a9:38:a9:1b c72d nas0 0x1000d3b8
Sep 20 23:20:44> Connect: ppp0 {--} nas0
Sep 20 23:23:53> Terminating connection due to lack of activity.
Sep 20 23:23:53> Connection terminated.
Sep 20 23:23:53> Doing disconnect
Sep 20 23:25:14> Connecting PPPoE socket: 00:14:a9:38:a9:1b ce2d nas0 0x1000d3b8
Sep 20 23:25:14> Connect: ppp0 {--} nas0
Sep 20 23:52:08> Terminating connection due to lack of activity.
Sep 20 23:52:08> Connection terminated.
Sep 20 23:52:08> Doing disconnect
Sep 20 23:55:46> Connecting PPPoE socket: 00:14:a9:38:a9:1b f92d nas0 0x1000d3b8
Sep 20 23:55:46> Connect: ppp0 {--} nas0
Sep 21 00:34:09> Terminating connection due to lack of activity.
Sep 21 00:34:09> Connection terminated.
Sep 21 00:34:09> Doing disconnect
Sep 21 00:38:23> Connecting PPPoE socket: 00:14:a9:38:a9:1b 532e nas0 0x1000d3b8
Sep 21 00:38:23> Connect: ppp0 {--} nas0
Sep 21 00:48:09> Terminating connection due to lack of activity.
Sep 21 00:48:09> Connection terminated.
Sep 21 00:48:09> Doing disconnect
Sep 21 01:05:41> Connecting PPPoE socket: 00:14:a9:38:a9:1b 962e nas0 0x1000d3b8
Sep 21 01:05:41> Connect: ppp0 {--} nas0
Sep 21 01:07:07> Terminating connection due to lack of activity.
Sep 21 01:07:07> Connection terminated.
Sep 21 01:07:07> Doing disconnect
Sep 21 01:09:40> Connecting PPPoE socket: 00:14:a9:38:a9:1b a02e nas0 0x1000d3b8
Sep 21 01:09:40> Connect: ppp0 {--} nas0
Sep 21 01:12:12> Terminating connection due to lack of activity.
Sep 21 01:12:12> Connection terminated.
Sep 21 01:12:12> Doing disconnect
Sep 21 01:12:22> Connecting PPPoE socket: 00:14:a9:38:a9:1b a82e nas0 0x1000d3b8
Sep 21 01:12:22> Connect: ppp0 {--} nas0
Sep 21 01:32:08> Terminating connection due to lack of activity.
Sep 21 01:32:08> Connection terminated.
Sep 21 01:32:08> Doing disconnect
Sep 21 01:32:58> Connecting PPPoE socket: 00:14:a9:38:a9:1b d52e nas0 0x1000d3b8
Sep 21 01:32:58> Connect: ppp0 {--} nas0
Sep 21 01:38:15> Terminating connection due to lack of activity.
Sep 21 01:38:15> Connection terminated.
Sep 21 01:38:15> Doing disconnect
Sep 21 01:38:17> Connecting PPPoE socket: 00:14:a9:38:a9:1b df2e nas0 0x1000d3b8
Sep 21 01:38:17> Connect: ppp0 {--} nas0
Sep 21 01:40:08> Terminating connection due to lack of activity.
Sep 21 01:40:08> Connection terminated.
Sep 21 01:40:08> Doing disconnect
Sep 21 01:42:33> Connecting PPPoE socket: 00:14:a9:38:a9:1b ed2e nas0 0x1000d3b8
Sep 21 01:42:33> Connect: ppp0 {--} nas0
Sep 21 01:44:58> Terminating connection due to lack of activity.
Sep 21 01:44:58> Connection terminated.
Sep 21 01:44:58> Doing disconnect

Ну так провайдер не выдает DNSы!

А чё за провайдер, а то уже второй подобный вопрос?

Для настройки ручками ставим DNS Selection в Use user discovered DNS server only, а ниже прописывайте DNSы

или

пинать прова.

Провайдер - домолик.
Теперь понятно, что не выдаёт днс, токо почему после того как я ввел днс, потом удалил и поставил на автомат всё заработало

ipconfig /flashdns и работать перестанет! Винда кэширует, и пока не обновится таблица ip-mac или не будет сброшен кеш DNS всё будет работать.