Date: Wed, 22 Nov 2006 15:50:39 +0100 From: Thierry Lacoste <th.lacoste@wanadoo.fr> To: freebsd-questions@freebsd.org Subject: problems with check_dhcp in nagios Message-ID: <200611221550.40239.th.lacoste@wanadoo.fr>
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Hello, I'm using nagios-2.4 with nagios-plugins-1.4.3,1 on FreeBSD 6.1-RELEASE-p10. I have a problem to make check_dhcp work. dhclient works as expected: [root@rigel ~]# dhclient em0 DHCPREQUEST on em0 to 255.255.255.255 port 67 DHCPREQUEST on em0 to 255.255.255.255 port 67 DHCPDISCOVER on em0 to 255.255.255.255 port 67 interval 5 DHCPDISCOVER on em0 to 255.255.255.255 port 67 interval 8 DHCPOFFER from 194.214.13.3 DHCPOFFER from 194.214.13.2 DHCPOFFER already seen. DHCPREQUEST on em0 to 255.255.255.255 port 67 DHCPACK from 194.214.13.3 bound to 194.214.13.6 -- renewal in 21600 seconds. But check_dhcp doesn't work (with dhclient killed): [root@rigel ~]# /usr/local/libexec/nagios/check_dhcp -i em0 -v DHCP socket: 3 Hardware address: 000d56bd84c5 DHCPDISCOVER to 255.255.255.255 port 67 DHCPDISCOVER XID: 1804289383 (0x6B8B4567) DHCDISCOVER ciaddr: 0.0.0.0 DHCDISCOVER yiaddr: 0.0.0.0 DHCDISCOVER siaddr: 0.0.0.0 DHCDISCOVER giaddr: 0.0.0.0 send_dhcp_packet result: 548 No (more) data received Result=ERROR Total responses seen on the wire: 0 Valid responses for this machine: 0 DHCP problem: No DHCPOFFERs were received. The -s switch to specify the IP of a DHCP server doesn't help. Using ethereal I can see one "DHCP Discover" packet sent and nothing else. I don't know if it is relevant but I noticed that the source adress of this packet is the IP of the machine while the source address of "DHCP Discover" packets issued by dhclient is 0.0.0.0. Any tip would be appreciated. Regards, Thierry.
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