10-02-2001
Well... more detail would help.
What OS?
Can you ping machines on your local net?
What is your network design look like?
Are you going through a fire wall?
Is you DNS set up to pass requests through the fire wall?
etc., etc.???
There are literally doezens of reasons why this may not work.
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UDHCPC(8) GNU/Linux Administrator's Manual UDHCPC(8)
NAME
udhcpc - very small DHCP client
SYNOPSIS
udhcpc [OPTION]...
DESCRIPTION
The udhcp client negotiates a lease with the DHCP server and executes a script when it is obtained or lost.
OPTIONS
-c CLIENTID, --clientid=CLIENTID
Send the client identifier CLIENTID.
-f, --foreground
Do not fork after obtaining a lease.
-H HOSTNAME, --hostname=HOSTNAME
Send the client hostname HOSTNAME.
-h HOSTNAME
Alias for -H HOSTNAME.
-i INTERFACE, --interface=INTERFACE
Configure INTERFACE.
-n, --now
Exit with failure if a lease cannot be obtained.
-p FILE, --pidfile=FILE
Write the process ID of the daemon to FILE.
-q, --quit
Exit after obtaining a lease.
-r ADDRESS, --request=ADDRESS
Request IP address ADDRESS.
-s FILE, --script=FILE
Use script FILE.
-v, --version
Display version.
USAGE
When an event occurs, udhcpc executes a script. There are four possible arguments to this script:
deconfig
deconfig is used when udhcpc starts, and when a lease is lost. The script should put the interface in an up, but deconfigured,
state.
bound bound is used when udhcpc moves from an unbound to a bound state. The script should configure the interface and set any other rele-
vant parameters (e.g., default gateway, dns server, etc.).
renew renew is used when udhcpc when a lease is renewed. The interface is already configured, so the IP address will not change. Other
parameters (e.g., default gateway, subnet mask, dns server) may.
nak nak is used when udhcpc receieves a NAK packet from the server. The enviromental variable $message will contain the reason for the
NAK message if the server included one. Processing this message is optional, as the script will also be called with deconfig if need
be.
Parameters are passed to the script via the following environment variables:
HOME The inherited HOME, or "/" if it is unset.
PATH The inherited PATH, or "/bin:/usr/bin:/sbin:/usr/sbin" if it is unset.
interface
The interface.
ip The client IP address.
siaddr The BOOTP next server option.
sname The BOOTP server name option.
boot_file
The BOOTP boot file option.
subnet The subnet mask.
timezone
The timezone offset from UTC in seconds.
router The list of routers.
timesvr
The list of time servers.
namesvr
The list of IEN 116 name servers.
dns The list of DNS servers.
logsvr The list of MIT-LCS UDP log servers.
cookiesvr
The list of RFC 865 cookie servers.
lprsvr The list of LPR servers.
hostname
The host name.
bootsize
The length in 512-octet blocks of the bootfile.
domain The domain name of the network.
swapsvr
The client's swap server.
rootpath
The path of the client's root dist.
ipttl The TTL.
mtu The MTU.
broadcast
The broadcast address.
ntpsrv The list of NTP servers.
wins The list of WINS servers.
lease The lease time in seconds.
dhcptype
The DHCP message type (safely ignored).
serverid
The server IP address.
message
Reason for a DHCPNAK.
tftp The TFTP server name.
bootfile
The bootfile name.
FILES
/usr/share/udhcpc/default.script
Script run when leases are obtained or lost.
NOTES
udhcpc responds to the following signals:
SIGUSR1
This signal causes udhcpc to renew the current lease or, if it does not have one, obtain a new lease.
SIGUSR2
This signal caused udhcpc to release the current lease.
GNU
/Linux 2001-09-26 UDHCPC(8)