Re: HELP! dhcp server not talking to clients
Not sure what the problem is but have a few observations:
The option subnet-mask 255.255.255.0 statement should be in a subnet
declaration if needed.
Did you compile your own kernel? Dhcpd requires two settings (don't
remember what they are at the moment, but they're in the docs.)
The 192.168.1.x addresses suggest that there is another host on the
network handing out assignments (wireless AP, dsl modem/router, etc).
HTH,
Ernest Johanson
Systems Administrator
Fuller Theological Seminary
On Mon, 16 Dec 2002, Charles Lewis wrote:
> Date: Mon, 16 Dec 2002 23:53:00 -0600
> From: Charles Lewis <lewisc@delta.swau.edu>
> To: debian-user@lists.debian.org
> Subject: HELP! dhcp server not talking to clients
>
> I have dhcp set up on my linux box to serve a Win2000 box, a Win98 box,
> a WinXP box, and networked HP LJ1200. It works fine, until I try to
> upgrade the kernel from 2.4.18 to 2.4.20 (from an earlier thread). The
> machine locks up after a few minutes, so I go back to 2.4.18, and all my
> machines are getting 198.168.1.x numbers when my dhcp server is
> supposed to be providing 10.0.0.x numbers. It's very frustrating to
> everyone in the house because suddenly none of them can use the
> internet, print, or save files to their samba shares. Now I am not a
> network guru, so maybe someone can help me spot some problems in my setup.
>
> Here is my dhcpd.conf:
>
> #option domain-name "";
> #option domain-name-servers 205.165.192.254,205.165.193.254;
>
> server-identifier lewisc;
> authoritative;
> option subnet-mask 255.255.255.0;
> default-lease-time 600;
> max-lease-time 7200;
> subnet 10.0.0.0 netmask 255.255.255.0 {
> range 10.0.0.6 10.0.0.254;
> option broadcast-address 10.0.0.255;
> option routers 10.0.0.1;
> option netbios-name-servers 10.0.0.1;
> }
>
> host lewisc2 {
> hardware ethernet 00:01:03:E7:48:1F;
> fixed-address 10.0.0.2;
> }
>
> host lewisc3 {
> hardware ethernet 00:00:39:F0:9A:C5;
> fixed-address 10.0.0.3;
> }
>
> host caleb {
> hardware ethernet 00:A0:CC:D2:A0:73;
> fixed-address 10.0.0.4;
> }
>
> host officelj {
> hardware ethernet 00:01:E6:48:69:A2;
> fixed-address 10.0.0.5;
> }
>
> When I run dhcpd in debug mode, I get:
>
> Listening on LPF/eth0/00:01:03:dd:22:e0/10.0.0.0
> Sending on LPF/eth0/00:01:03:dd:22:e0/10.0.0.0
> Sending on Socket/fallback/fallback-net
>
> And it just sits there with no feedback.
>
> When I do a tcpdump -i eth0, I get the following junk:
> 23:46:04.324753 192.168.1.102.netbios-dgm > 192.168.1.255.netbios-dgm:
> NBT UDP PACKET(138)
> 23:46:33.933645 192.168.1.1.bootps > 255.255.255.255.bootpc:
> xid:0xbee8b113 C:192.168.1.101 Y:192.168.1.101 ether 0:1:e6:48:69:a2
> file ""[|bootp]
> 23:46:36.287786 arp who-has 192.168.1.1 tell 192.168.1.102
> 23:46:36.289146 192.168.1.1.bootps > 255.255.255.255.bootpc:
> xid:0xf220e34f C:192.168.1.102 Y:192.168.1.102 ether 0:a0:cc:d2:a0:73
> file ""[|bootp]
> 23:49:04.314952 192.168.1.1.bootps > 255.255.255.255.bootpc:
> xid:0x28e8b113 C:192.168.1.101 Y:192.168.1.101 ether 0:1:e6:48:69:a2
> file ""[|bootp]
> 23:49:06.268378 arp who-has 192.168.1.1 tell 192.168.1.102
> 23:49:06.269729 192.168.1.1.bootps > 255.255.255.255.bootpc:
> xid:0xdd3f9a45 C:192.168.1.102 Y:192.168.1.102 ether 0:a0:cc:d2:a0:73
> file ""[|bootp]
>
> The last time this happened, it eventually started working, but I think
> it may have been because the lease ran out on all the machines. *shrug*
> I don't know but I'm ready to pull what little hair I have left out. Any
> ideas would be GREATLY appreciated.
>
> Charles Lewis
>
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