Logging circuit-id
Sean McMurray
sean at mvtel.com
Wed Mar 18 14:03:30 UTC 2015
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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