Logging circuit-id

[perl-list]

What version of ISC DHCP, and is this DHCPv6 that you are trying to log? 

> From: "Sean McMurray" <sean at mvtel.com>
> To: "Users of ISC DHCP" <dhcp-users at lists.isc.org>
> Sent: Tuesday, March 17, 2015 9:22:30 PM
> Subject: Re: Logging circuit-id

> I can tell it to log(error, "Hello") and it won't log.

> On 03/17/2015 06:15 PM, perl-list wrote:

>> Here is an example of how I have done it:

>> if exists agent.circuit-id {

>> log ( error,

>> concat( "agent.circuit-id,", binary-to-ascii (10, 8, ".", leased-address),",",

>> "circuit-id,",option agent.circuit-id,",",

>> "time,",binary-to-ascii(10,32,"",encode-int (lease-time,32)),",",

>> "hardware,",binary-to-ascii(16,8,":",substring(hardware,1,7))

>> )

>> );

>> }

>> If that doesn't work then the circuit-id may not be there (if no line appears at
>> all in the logs), or if it only logs a partial line then the circuit-id is
>> likely binary instead of ASCII. I'm not sure how to log if it is binary - some
>> use of binary-to-ascii will be necessary.

>>> From: "Sean McMurray" <sean at mvtel.com>
>>> To: dhcp-users at lists.isc.org
>>> Sent: Tuesday, March 17, 2015 5:51:16 PM
>>> Subject: Logging circuit-id

>>> I would like my dhcpd logs to include circuit-id.
>>> I have tried to use log() directives in my conf file, but nothing I have
>>> tried works.

>>> Here is an example of a configuration I have included in a subnet:

>>> log(info, concat(
>>> " Mac: ",binary-to-ascii(16, 8, ":", substring(hardware,1, 6))
>>> ," IP: ",binary-to-ascii (10, 8, ".", leased-address)
>>> ,"Circuit: ",option agent.circuit-id
>>> ));

>>> Standard logging is working fine to record DHCPDISCOVER, DHCPOFFER, etc.
>>> I just can't get custom entries to show up in the log.

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