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DHCP Service stopping??

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Offline ber

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DHCP Service stopping??
« on: April 26, 2011, 12:31:59 PM »
Hi Ive got a problem with the dhcp on my SME 7.5.2 server for whatever reason is stopping.
Ive had a look at the logs and am a little puzzled with the logs.

The only way to get the dhcp running again is to restart the service manually. The SERVER has minimum software installed and runs as a file server with Dansguardian as a webfilter for kids Computer lounge.

The server is setup in a server-gateway mode.
ADSL Model Router connects to the internet and also has DHCP enabled on it.


IP range for local network is 192.168.0.x  DHCP provided by the SME server.
IP range for ADSL Modem/Router is 192.168.1.x DHCP is running on the ADSL modem.

The SME gateway IP is 192.168.1.50

The logs seems to show that the ADSL mOdem Router is "messing" with the SME DHCP IP range and possibly "scrambling" the dhcpdaemon- (please excuse the picturesque language)
Is this the case?? Should i disable the ADSL Modem DHCP service?

here is a copy of the log...

/var/log/dhcpd/current: Viewed at Tue 26 Apr 2011 22:21:06 NZST.

2011-04-26 13:35:45.326320500 Internet Systems Consortium DHCP Server V3.0.1
2011-04-26 13:35:45.326329500 Copyright 2004 Internet Systems Consortium.
2011-04-26 13:35:45.326334500 All rights reserved.
2011-04-26 13:35:45.326337500 For info, please visit http://www.isc.org/sw/dhcp/
2011-04-26 13:35:45.384431500 Wrote 11 leases to leases file.
2011-04-26 13:35:45.393948500 Listening on LPF/eth0/00:02:a5:cb:cf:52/192.168.0/24
2011-04-26 13:35:45.393957500 Sending on   LPF/eth0/00:02:a5:cb:cf:52/192.168.0/24
2011-04-26 13:35:45.393962500 Sending on   Socket/fallback/fallback-net
2011-04-26 13:35:48.610151500 Internet Systems Consortium DHCP Server V3.0.1
2011-04-26 13:35:48.610160500 Copyright 2004 Internet Systems Consortium.
2011-04-26 13:35:48.610164500 All rights reserved.
2011-04-26 13:35:48.610168500 For info, please visit http://www.isc.org/sw/dhcp/
2011-04-26 13:35:48.627343500 Wrote 11 leases to leases file.
2011-04-26 13:35:48.645774500 Listening on LPF/eth0/00:02:a5:cb:cf:52/192.168.0/24
2011-04-26 13:35:48.645782500 Sending on   LPF/eth0/00:02:a5:cb:cf:52/192.168.0/24
2011-04-26 13:35:48.645787500 Sending on   Socket/fallback/fallback-net
2011-04-26 13:36:17.680883500 DHCPREQUEST for 192.168.1.2 from 00:1d:60:29:ea:cd via eth0: unknown lease 192.168.1.2.
2011-04-26 13:36:21.659314500 DHCPREQUEST for 192.168.1.2 from 00:1d:60:29:ea:cd via eth0: unknown lease 192.168.1.2.
2011-04-26 13:36:29.659457500 DHCPREQUEST for 192.168.1.2 from 00:1d:60:29:ea:cd via eth0: unknown lease 192.168.1.2.
2011-04-26 13:36:51.161003500 DHCPDISCOVER from 00:1d:60:29:ea:cd via eth0
2011-04-26 13:36:52.000847500 DHCPOFFER on 192.168.0.96 to 00:1d:60:29:ea:cd (Staff) via eth0
2011-04-26 13:36:52.009449500 DHCPREQUEST for 192.168.0.96 (192.168.0.254) from 00:1d:60:29:ea:cd (Staff) via eth0
2011-04-26 13:36:52.009457500 DHCPACK on 192.168.0.96 to 00:1d:60:29:ea:cd (Staff) via eth0
2011-04-26 13:38:19.911965500 DHCPREQUEST for 192.168.0.96 from 00:1d:60:29:ea:cd (Staff) via eth0
2011-04-26 13:38:19.911973500 DHCPACK on 192.168.0.96 to 00:1d:60:29:ea:cd (Staff) via eth0
2011-04-26 13:38:22.414675500 DHCPREQUEST for 192.168.0.96 from 00:1d:60:29:ea:cd (Staff) via eth0
2011-04-26 13:38:22.414685500 DHCPACK on 192.168.0.96 to 00:1d:60:29:ea:cd (Staff) via eth0
2011-04-26 13:38:39.778207500 DHCPREQUEST for 192.168.1.3 from 00:01:6c:0b:10:fd via eth0: unknown lease 192.168.1.3.
2011-04-26 13:38:42.775873500 DHCPREQUEST for 192.168.1.3 from 00:01:6c:0b:10:fd via eth0: unknown lease 192.168.1.3.
2011-04-26 13:38:51.775337500 DHCPREQUEST for 192.168.1.3 from 00:01:6c:0b:10:fd via eth0: unknown lease 192.168.1.3.
2011-04-26 13:39:16.091270500 DHCPREQUEST for 192.168.1.3 from 00:01:6c:0b:10:fd via eth0: unknown lease 192.168.1.3.
2011-04-26 13:39:20.088548500 DHCPREQUEST for 192.168.1.3 from 00:01:6c:0b:10:fd via eth0: unknown lease 192.168.1.3.
2011-04-26 13:39:28.088405500 DHCPREQUEST for 192.168.1.3 from 00:01:6c:0b:10:fd via eth0: unknown lease 192.168.1.3.
2011-04-26 13:40:32.647143500 DHCPREQUEST for 192.168.1.3 from 00:01:6c:0b:10:fd via eth0: unknown lease 192.168.1.3.
2011-04-26 13:40:36.637903500 DHCPREQUEST for 192.168.1.3 from 00:01:6c:0b:10:fd via eth0: unknown lease 192.168.1.3.
2011-04-26 13:40:43.638010500 DHCPREQUEST for 192.168.1.3 from 00:01:6c:0b:10:fd via eth0: unknown lease 192.168.1.3.
2011-04-26 13:41:10.026875500 DHCPREQUEST for 192.168.1.3 from 00:01:6c:0b:10:fd via eth0: unknown lease 192.168.1.3.
2011-04-26 13:41:14.027238500 DHCPREQUEST for 192.168.1.3 from 00:01:6c:0b:10:fd via eth0: unknown lease 192.168.1.3.
2011-04-26 13:41:22.034543500 DHCPREQUEST for 192.168.1.3 from 00:01:6c:0b:10:fd via eth0: unknown lease 192.168.1.3.
2011-04-26 16:22:42.329204500 Internet Systems Consortium DHCP Server V3.0.1
2011-04-26 16:22:42.329213500 Copyright 2004 Internet Systems Consortium.
2011-04-26 16:22:42.329218500 All rights reserved.
2011-04-26 16:22:42.329248500 For info, please visit http://www.isc.org/sw/dhcp/
2011-04-26 16:22:42.366119500 Wrote 11 leases to leases file.
2011-04-26 16:22:42.376994500 Listening on LPF/eth0/00:02:a5:cb:cf:52/192.168.0/24
2011-04-26 16:22:42.377002500 Sending on   LPF/eth0/00:02:a5:cb:cf:52/192.168.0/24
2011-04-26 16:22:42.377007500 Sending on   Socket/fallback/fallback-net
2011-04-26 16:25:17.285081500 DHCPDISCOVER from 00:1d:60:29:ec:7c via eth0
2011-04-26 16:25:18.000992500 DHCPOFFER on 192.168.0.87 to 00:1d:60:29:ec:7c (Julie) via eth0
2011-04-26 16:25:18.009257500 DHCPREQUEST for 192.168.0.87 (192.168.0.254) from 00:1d:60:29:ec:7c (Julie) via eth0
2011-04-26 16:25:18.009566500 DHCPACK on 192.168.0.87 to 00:1d:60:29:ec:7c (Julie) via eth0
2011-04-26 16:42:29.744172500 DHCPINFORM from 192.168.1.4 via eth0: unknown subnet 0.0.0.0
2011-04-26 16:42:32.733284500 DHCPINFORM from 192.168.1.4 via eth0: unknown subnet 0.0.0.0
2011-04-26 16:44:20.241556500 DHCPINFORM from 192.168.1.4 via eth0: unknown subnet 0.0.0.0
2011-04-26 16:44:23.232400500 DHCPINFORM from 192.168.1.4 via eth0: unknown subnet 0.0.0.0
2011-04-26 17:02:59.817412500 DHCPINFORM from 192.168.0.87 via eth0
2011-04-26 17:02:59.817420500 DHCPACK to 192.168.0.87
2011-04-26 17:03:02.807560500 DHCPINFORM from 192.168.0.87 via eth0
2011-04-26 17:03:02.807568500 DHCPACK to 192.168.0.87
2011-04-26 17:42:29.742898500 DHCPINFORM from 192.168.1.4 via eth0: unknown subnet 0.0.0.0
2011-04-26 17:42:33.732024500 DHCPINFORM from 192.168.1.4 via eth0: unknown subnet 0.0.0.0
2011-04-26 17:44:20.240295500 DHCPINFORM from 192.168.1.4 via eth0: unknown subnet 0.0.0.0
2011-04-26 17:44:24.231186500 DHCPINFORM from 192.168.1.4 via eth0: unknown subnet 0.0.0.0
2011-04-26 17:46:51.151278500 DHCPINFORM from 192.168.1.4 via eth0: unknown subnet 0.0.0.0
2011-04-26 17:46:56.136190500 DHCPINFORM from 192.168.1.4 via eth0: unknown subnet 0.0.0.0
2011-04-26 17:48:08.642913500 DHCPINFORM from 192.168.1.4 via eth0: unknown subnet 0.0.0.0
2011-04-26 17:48:12.635516500 DHCPINFORM from 192.168.1.4 via eth0: unknown subnet 0.0.0.0
2011-04-26 17:49:25.148862500 DHCPINFORM from 192.168.1.4 via eth0: unknown subnet 0.0.0.0
2011-04-26 17:49:29.134818500 DHCPINFORM from 192.168.1.4 via eth0: unknown subnet 0.0.0.0
2011-04-26 17:50:41.641456500 DHCPINFORM from 192.168.1.4 via eth0: unknown subnet 0.0.0.0
2011-04-26 17:50:45.634152500 DHCPINFORM from 192.168.1.4 via eth0: unknown subnet 0.0.0.0
2011-04-26 17:51:58.147824500 DHCPINFORM from 192.168.1.4 via eth0: unknown subnet 0.0.0.0
2011-04-26 17:52:01.133528500 DHCPINFORM from 192.168.1.4 via eth0: unknown subnet 0.0.0.0
2011-04-26 17:53:13.640396500 DHCPINFORM from 192.168.1.4 via eth0: unknown subnet 0.0.0.0
2011-04-26 17:53:17.632849500 DHCPINFORM from 192.168.1.4 via eth0: unknown subnet 0.0.0.0
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Offline ber

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Re: DHCP Service stopping??
« Reply #1 on: April 26, 2011, 12:47:49 PM »
Also supplement to whats reported, this server was installed about a month ago- ran flawlessly, updates are all installed, problem occured last week. TIA

SME 7.5.2 Server/gateway mode.- used as a file server/dhcp and webfilter (dansguardian)
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Offline mmccarn

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Re: DHCP Service stopping??
« Reply #2 on: April 26, 2011, 01:10:18 PM »
I don't know if this is relevant, but most DHCP servers shut themselves down if they "sense" another server running on the same network.  Is there any chance that there's another DHCP server running somewhere?

Also, what is the device at 192.168.1.4?
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Offline CharlieBrady

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Re: DHCP Service stopping??
« Reply #3 on: April 26, 2011, 02:14:59 PM »
Quote from: ber on April 26, 2011, 12:31:59 PM
IP range for local network is 192.168.0.x  DHCP provided by the SME server.
IP range for ADSL Modem/Router is 192.168.1.x DHCP is running on the ADSL modem.

The SME gateway IP is 192.168.1.50

You've obviously got a wiring topology problem. You haven't kept the 192.168.1.x and 192.168.0.x networks physically separated. You have devices with 192.168.1.x leases making DHCP requests which are being seen by your 192.168.0.y SME server.
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Offline ber

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Re: DHCP Service stopping??
« Reply #4 on: April 27, 2011, 02:27:02 AM »
(RESOLVED)

Hi guys just a quick feedback on what the problem and the solution was- charlie you were right and so was mmccarn, the wiring topology was wrong and as a result there are two dhcp serves running on the network- it was my fault- was troubleshooting and didnt return the cabling to its recommended wiring setup.

Thanks again.
« Last Edit: April 27, 2011, 09:37:44 AM by ber »
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  1. Koozali.org: home of the SME Server
  2. Obsolete Releases
  3. SME Server 7.x
  4. Topic: DHCP Service stopping??