dhcpd related issue - not giving up

Sun Nov 1 11:00:52 UTC 2009

I don't give it up, doing some tcpdump on my BSD I can see the dhcp request reaches the machine, the dhcpd is running, but why doesn't gives any IP?

# tcpdump -i rl1 -n port 67 or port 68
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on rl1, link-type EN10MB (Ethernet), capture size 96 bytes
11:51:43.086597 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:24:03:f1:bd:36, length 300
11:51:45.102260 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:24:03:f1:bd:36, length 300
11:51:49.114960 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:24:03:f1:bd:36, length 300
11:51:57.150734 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:24:03:f1:bd:36, length 300
11:51:59.157311 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:24:03:f1:bd:36, length 300
11:52:03.160029 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:24:03:f1:bd:36, length 300
11:57:09.770520 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:23:6c:86:41:d9, length 300
11:57:11.941379 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:23:6c:86:41:d9, length 300
11:57:14.928398 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:23:6c:86:41:d9, length 300
11:57:16.378911 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:23:6c:86:41:d9, length 300
11:57:17.703219 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:23:6c:86:41:d9, length 300
11:57:18.839763 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:23:6c:86:41:d9, length 300

________________________________
From: Dánielisz László <laszlo_danielisz at yahoo.com>
To: freebsd-questions at freebsd.org
Sent: Sun, November 1, 2009 11:06:36 AM
Subject: Re: dhcpd related issue

I had one more idea: try nmap on my dhcp server, and port 67 does not seems to be opened, after I tried telneting in and my connection was refused:

$ telnet 192.168.1.1 67
Trying 192.168.1.1...
telnet: connect to address 192.168.1.1: Connection refused
telnet: Unable to connect to remote host

Than I disabled pf
# pfctl -d
No ALTQ support in kernel
ALTQ related functions disabled
pf disabled

Than I checked telnet/nmap again but still don't found any 67 port ever there. I checked again that the dhcpd is running, and its up:
# ps ax|grep dhcp
  958  ??  Is     0:00.00 /usr/local/sbin/dhcpd -cf /usr/local/etc/dhcpd.conf -lf /var/db/dhcpd/dhcpd.lease

Any idea?

________________________________
From: Dánielisz László <laszlo_danielisz at yahoo.com>
To: patrick <gibblertron at gmail.com>
Cc: freebsd-questions at freebsd.org
Sent: Sun, November 1, 2009 8:34:03 AM
Subject: Re: dhcpd related issue

It's the same, I still don't got any IP address.

________________________________
From: patrick <gibblertron at gmail.com>
To: Dánielisz László <laszlo_danielisz at yahoo.com>
Cc: freebsd-questions at freebsd.org
Sent: Sun, November 1, 2009 6:38:31 AM
Subject: Re: dhcpd related issue

What happens if you disable pf temporarily?

2009/10/31 Dánielisz László <laszlo_danielisz at yahoo.com>:
> Hello,
>
> I just configured my dhcpd but it gives no IP-s.
> What had I done until now:
>
>  1. Installed isc-dhcp via ports
>
> 2. edited the /usr/local/etc/dhcpd.conf
>
> option domain-name "bsd";
> option domain-name-servers <my dns server ip>;
> option subnet-mask 255.255.255.0;
> authoritative;
>
> default-lease-time 3600;
> max-lease-time 86400;
> ddns-update-style none;
>
> subnet 192.168.1.0 netmask 255.255.255.0 {
> range 192.168.1.129 192.168.1.250;
> option routers 192.168.1.1;
> }
>
> 3. Added the following ones to /etc/rc.conf
> ifconfig_rl1="inet 192.168.1.1  netmask 255.255.255.0"
> dhcpd_enable="YES"
> dhcpd_conf="/usr/local/etc/dhcpd.conf"
> dhcpd_ifaces="rl1"
>
>
> 4. Opened the adequate port in pf
> pass in log on rl1 inet proto tcp from 192.168.1.0/24 to 192.168.1.1 port = bootps flags S/SA keep state
> pass in log on rl1 inet proto udp from 192.168.1.0/24 to 192.168.1.1 port = bootps keep state
>
> 5.. When I start de daemon:
> # /usr/local/etc/rc.d/isc-dhcpd start
> Starting dhcpd.
> Internet Systems Consortium DHCP Server V3.0.7
> Copyright 2004-2008 Internet Systems Consortium.
> All rights reserved.
> For info, please visit http://www.isc.org/sw/dhcp/
> Wrote 0 leases to leases file.
> Listening on Socket/rl1/192.168.1/24
> Sending on   Socket/rl1/192.168.1/24
>
> Everythings looks to be ok there but on the client (I tried OS-X and Nokia symbian) I can not obtain the IP address, do you have any idea what should I check?
>
>
> Thanks!
> Laci
>
>
>
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