Logging circuit-id

[perl-list]

it isn't the default mode on my install (4.2.5-P1) ... I need to pass -6 to invoke DHCPv6 mode. Also requires separate config and leases files specific to DHCPv6. 

> From: "Sean McMurray" <sean at mvtel.com>
> To: "Users of ISC DHCP" <dhcp-users at lists.isc.org>
> Sent: Wednesday, March 18, 2015 10:55:16 AM
> Subject: Re: Logging circuit-id

> hmmm...

> If that is true, it makes the documentation more suspect.
> The docs say that the default mode for dhcpd is DHCPv6. Is that true?

> On 03/18/2015 07:21 AM, perl-list wrote:

>> I believe those log() features (as well as oncommit()) do not work in DHCPv6
>> until 4.3.2

>>> From: "Sean McMurray" <sean at mvtel.com>
>>> To: "Users of ISC DHCP" <dhcp-users at lists.isc.org>
>>> Sent: Wednesday, March 18, 2015 10:03:30 AM
>>> Subject: Re: Logging circuit-id

>>> version 4.1.1
>>> yes. it is DHCPv6, by default.

>>> On 03/18/2015 06:21 AM, perl-list wrote:

>>>> 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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