Проблема аналогичная
https://forum.ubuntu.ru/index.php?topic=66168.0https://forum.ubuntu.ru/index.php?topic=66112.0 - здесь решено, но мне не помогло.
ethernet. DHCP сервер провайдера. WinXP абсолютно свободно получает адрес.А Ubunt-е dhcp сервак не отвечает.
/etc/network/interfaces
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet dhcp
/etc/dhcp3/dhclient.conf
# Configuration file for /sbin/dhclient, which is included in Debian's
# dhcp3-client package.
#
# This is a sample configuration file for dhclient. See dhclient.conf's
# man page for more information about the syntax of this file
# and a more comprehensive list of the parameters understood by
# dhclient.
#
# Normally, if the DHCP server provides reasonable information and does
# not leave anything out (like the domain name, for example), then
# few changes must be made to this file, if any.
#
option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;
send host-name "<hostname>";
#send dhcp-client-identifier 1:0:a0:24:ab:fb:9c;
#send dhcp-lease-time 3600;
#supersede domain-name "fugue.com home.vix.com";
#prepend domain-name-servers 127.0.0.1;
request subnet-mask, broadcast-address, time-offset, routers,
domain-name, domain-name-servers, domain-search, host-name,
netbios-name-servers, netbios-scope, interface-mtu,
rfc3442-classless-static-routes, ntp-servers;
#require subnet-mask, domain-name-servers;
#timeout 60;
#retry 60;
#reboot 10;
#select-timeout 5;
#initial-interval 2;
#script "/etc/dhcp3/dhclient-script";
#media "-link0 -link1 -link2", "link0 link1";
#reject 192.33.137.209;
#alias {
# interface "eth0";
# fixed-address 192.5.5.213;
# option subnet-mask 255.255.255.255;
#}
#lease {
# interface "eth0";
# fixed-address 192.33.137.200;
# medium "link0 link1";
# option host-name "andare.swiftmedia.com";
# option subnet-mask 255.255.255.0;
# option broadcast-address 192.33.137.255;
# option routers 192.33.137.250;
# option domain-name-servers 127.0.0.1;
# renew 2 2000/1/12 00:00:01;
# rebind 2 2000/1/12 00:00:01;
# expire 2 2000/1/12 00:00:01;
#}
Я пошел дальше. на обоих ос поставил wireshark. Прилагаю дамп части пакетов во время dhcp запроса, сохраненный wireshark-ом.
В win сначала поставил статический адрес от балды. включил wireshark - поменял на dhcp.
В ubuntu интерфейс был поднят при старте. включил wireshark - запустил
sudo dhcpclient eth0
Файлы:
дамп под Windows
http://turbanoff.narod.ru/windump.pcapдамп под Ubuntu
http://turbanoff.narod.ru/lindump.pcap