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Old 10-25-2004, 04:42 PM   #1
Registered: Jun 2004
Location: Nacogdoches, TX
Distribution: Ubuntu 7.04
Posts: 230

Rep: Reputation: 30
dhcp won't start automatically on boot

For some odd reason, dhcpcd won't start up automatically anymore. This computer is being used as a server, and I set it up at my house and dhcp started just fine. But, when I set it up where I'm keeping it, I noticed that it wasn't starting on its own. I tried adding a line in rc.local with the command to start eth0(/sbin/dhcpcd eth0), but it seems like it would only try for about 2 seconds or so and then the login prompt would come up. When I start it manually it takes a little while to get the ip address. If this was my desktop computer I wouldn't mind, but since this is being used as a server, and also doesn't have a keyboard, mouse, and monitor hooked up to it, I would like to figure out a way to fix this in cause I have to resart or the power goes out. Any help would be appreciated.
Old 10-25-2004, 05:17 PM   #2
Registered: Oct 2003
Distribution: Slackware 10, Slackware-current, Slax
Posts: 50

Rep: Reputation: 15
dhcpcd should be starting from /etc/rc.d/rc.inet1, so take a look in there, and also make sure that file has execute privileges (if not then run /bin/chmod 755 /etc/rc.d/rc.inet1).

Check the configuration file. In /etc/rc.d/rc.inet1.conf, you should have a section that looks like this:
# Config information for eth0:
On that note... shouldn't a server have a static IP so you can forward packets from your gateway/router?
Old 10-25-2004, 06:49 PM   #3
Registered: Oct 2003
Posts: 534

Rep: Reputation: 30
I use a little script which I run in cron every 5 minutes. Here it is:
# dhcp-check - checks status of dhcp client
# in this case dhcpcd with a pid in /etc/dhcpc
# and restarts it when it is not running
if [ -f /etc/dhcpc/ ]; then
    echo DHCP client is running already...
    /sbin/dhcpcd -t 30 -d eth0 && /etc/rc.d/rc.firewall restart
Note: this one is for eth0, if you use another external device please adjust every instance of eth0 to the device you're using. The -t 30 is an extended period for timing out on dhcp response. Slackware uses default 10 (secs) . I restart my firewall script after successfully (re)starting the dhcpcd daemon. If you do not want that you can leave it out ( delete the && /etc/rc.d/rc.firewall restart part)
Old 10-25-2004, 06:54 PM   #4
Registered: Jun 2004
Location: Nacogdoches, TX
Distribution: Ubuntu 7.04
Posts: 230

Original Poster
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Thanks rotvogel I didn't even thinking about making a script to run in cron.

Everything in the rc.inet1 and rc.inet1.conf file are fine. As I said, it worked before I turned it off and brought it over to my gf's to set it up. And this server isn't behind a router/gateway, it's on a school network, so it's directly connected to the internet.
Old 01-23-2005, 06:43 PM   #5
Registered: Jun 2004
Location: Canada
Distribution: Slackware 10.2 KDE 3.4
Posts: 43

Rep: Reputation: 15
I've the same kind of problem.. but i dont know why.. before I add module to my 2.6.10 kernel, it's worked fine...
now when i boot in Slackware10 (current) dhcpcd is started (when i do a ps -aux) but i dont get any IP from my dhcp server. i must manualy do a /etc/rc.d/rc.inet1 stop and /etc/rc.d/rc.inet1 start
after it's work fine...

Anyone have an idead what i can do to fix it.. (if possible not a script... ) thanks !
Old 01-24-2005, 01:42 PM   #6
Registered: Mar 2004
Location: austria, vienna
Distribution: slackware-10.2
Posts: 89

Rep: Reputation: 15

Maybe increasing the timeout would help dhcpcd to get an ip address.

Look for the following lines in /etc/rc.d/rc.inet1 and change `-t 10' to e.g. `-t 30'.

/sbin/dhcpcd -d -t 30 -h ${DHCP_HOSTNAME[$1]} eth${1}

/sbin/dhcpcd -d -t 30 eth${1}


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