На Fedora 17 запущен dhcpd, который слушает запросы на интерфейсе p21p1. При подключении компьютеров с OS X и linux проблем с получением ip нет. Если подключить пк с Windows 7, ip адрес почему-то не выдается клиенту. В логах такие строки:
Sep 01 13:36:50 icehammer.localdomain dhcpd[4003]: DHCPREQUEST for 192.168.100.3 from 00:1f:5b:e8:fe:f0 (Macbook) via p21p1
Sep 01 13:36:50 icehammer.localdomain dhcpd[4003]: DHCPACK on 192.168.100.3 to 00:1f:5b:e8:fe:f0 (Macbook) via p21p1
Sep 01 13:36:57 icehammer.localdomain dhcpd[4003]: DHCPDISCOVER from 00:1f:5b:e8:fe:f0 (Macbook) via p21p1
Sep 01 13:36:57 icehammer.localdomain dhcpd[4003]: DHCPOFFER on 192.168.100.3 to 00:1f:5b:e8:fe:f0 (Macbook) via p21p1
Sep 01 13:36:57 icehammer.localdomain dhcpd[4003]: DHCPREQUEST for 192.168.100.3 (192.168.100.1) from 00:1f:5b:e8:fe:f0 (Macbook) via p21p1
Sep 01 13:36:57 icehammer.localdomain dhcpd[4003]: DHCPACK on 192.168.100.3 to 00:1f:5b:e8:fe:f0 (Macbook) via p21p1
Sep 01 13:36:58 icehammer.localdomain dhcpd[4003]: DHCPDISCOVER from 00:1f:5b:e8:fe:f0 (Macbook) via p21p1
Sep 01 13:36:58 icehammer.localdomain dhcpd[4003]: DHCPOFFER on 192.168.100.3 to 00:1f:5b:e8:fe:f0 (Macbook) via p21p1
Sep 01 13:36:58 icehammer.localdomain dhcpd[4003]: DHCPREQUEST for 192.168.100.3 (192.168.100.1) from 00:1f:5b:e8:fe:f0 (Macbook) via p21p1
Sep 01 13:36:58 icehammer.localdomain dhcpd[4003]: DHCPACK on 192.168.100.3 to 00:1f:5b:e8:fe:f0 (Macbook) via p21p1
Sep 01 13:36:59 icehammer.localdomain dhcpd[4003]: DHCPDISCOVER from 00:1f:5b:e8:fe:f0 (Macbook) via p21p1
Sep 01 13:36:59 icehammer.localdomain dhcpd[4003]: DHCPOFFER on 192.168.100.3 to 00:1f:5b:e8:fe:f0 (Macbook) via p21p1
Sep 01 13:36:59 icehammer.localdomain dhcpd[4003]: DHCPREQUEST for 192.168.100.3 (192.168.100.1) from 00:1f:5b:e8:fe:f0 (Macbook) via p21p1
subnet 192.168.100.0 netmask 255.255.255.252 {
range 192.168.100.2 192.168.100.3;
option broadcast-address 192.168.100.4;
option subnet-mask 255.255.255.252;
default-lease-time 600;
max-lease-time 7200;
}