I am using dhcpd as my client. It was setup by the Redhat installer.
Not sure about a config file, but have /etc/dhcpc/dhcpcd-eth0.info:
IPADDR=192.168.10.255
NETMASK=255.255.255.0
NETWORK=192.168.10.0
BROADCAST=192.168.10.255
GATEWAY=192.168.10.60
DNS=192.168.10.30
DHCPSID=192.168.10.30
DHCPGIADDR=0.0.0.0
DHCPSIADDR=0.0.0.0
DHCPCHADDR=00:50
=DA:C2:4C:04
DHCPSHADDR=00:10:6B:A7:F2:20
DHCPSNAME=
LEASETIME=864000
RENEWALTIME=432000
REBINDTIME=756000
INTERFACE=eth0
CLASSID="Linux 2.4.18-3 i686"
CLIENTID=00:50
A:A2:4C:05
also have /etc/sysconfig/network-scripts/ifcfg-eth0:
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=dhcp
and ifconfig yields:
eth0 Link encap:Ethernet HWaddr 00:A0:BA:B2:4C:04
inet addr:192.168.10.255 Bcast:192.168.10.255 Mask:255.255.255.0
UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2992 errors:0 dropped:0 overruns:1 frame:0
TX packets:270 errors:0 dropped:0 overruns:0 carrier:8
collisions:0 txqueuelen:100
RX bytes:383406 (374.4 Kb) TX bytes:61599 (60.1 Kb)
Interrupt:12 Base address:0xe400
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:8 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:560 (560.0 b) TX bytes:560 (560.0 b)