[Kea-users] kea-dhcp6 option 18 and 37 logging

[Torbjörn Eklöv]

> 31 jan. 2017 kl. 20:55 skrev Tomek Mrugalski <tomasz at isc.org>:
> 
> W dniu 27.01.2017 o 15:11, Torbjörn Eklöv pisze:
>> Hi list, I’m testing kea-dhcp6 with prefix delegation but I can’t get
>> the server log the option 18 and 37. I can see both ia_na and ia_pd
>> logged but not my options. What am i missing? It’s KEA 1.1 built with
>> this option - ./configure --enable-logger-check --with-openssl
>> --with-dhcp-mysql  --enable-debug
> Those options are not typically logged. If you enable debug level 45 or
> larger, then both incoming and outgoing packets are going to be logged.
> That will include interface-id (18) and remote-id (37). Be aware that it
> may be a lot of logs.
> 

Thanks. It’s for traceability I wan’t it.
I have tried ”normal” dhcpd but the dhcp6.interface-id  dhcp6.remote-id don’t get logged when there is a dhcpv6 relay in the path. The options is in the dhcpv6 message but

log ( info,  concat ( "remote-id - ", binary-to-ascii(16, 8, ":", option dhcp6.remote-id ) )) ;

don’t log anything.

I’ll try the debug level and the hook library.

/Tobbe

> Another option you may consider is the forensic logging hook library
> logs option 37 if present. See section 13.3.2
> (https://jenkins.isc.org/job/Kea_doc/guide/kea-guide.html#idp1376099460).
> It does not log interface-id (option 18), but it's a minor change. We
> can add it quickly if a customer requests it.
> 
> If neither of those approaches work for you, you can develop your own
> hook library that would print out those two specific options, along with
> whatever extra information you need.
> 
> Hope that helps,
> Tomek
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