[148114] in North American Network Operators' Group
Re: IPv6 RA vs DHCPv6 - The chosen one?
daemon@ATHENA.MIT.EDU (Owen DeLong)
Tue Jan 3 16:44:50 2012
From: Owen DeLong <owen@delong.com>
In-Reply-To: <4EF4E24D.4020107@cis.vutbr.cz>
Date: Tue, 3 Jan 2012 13:41:21 -0800
To: Tomas Podermanski <tpoder@cis.vutbr.cz>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
>=20
>>=20
>>> - SLAAC is usually processed in a kernel, DHCPv6 is usually run as a
>>> process in the user space. Diagnostic and troubleshooting is more
>>> complicated.
>>=20
>> Some operating system do the SLAAC processing in user space. What is
>> the problem.
>=20
> As I wrote. Troubleshooting is more difficult.
>=20
Having done a fair amount of troubleshooting for both SLAAC and DHCPv6 =
in real world deployments, I think your argument may be more theoretical =
than anecdotal in this case.
In my general experience, it's been relatively easy to troubleshoot =
either protocol and neither is particularly more difficult than the =
other. Start by making sure that you are sending and/or receiving =
correctly formed packets with the right data. If not, then you know that =
the packet originator is the most likely culprit. Absent =
misconfiguration of the router, I've never seen an incorrect RA. I've =
never seen an incorrect RS packet. Malformed DHCPv6 packets have been =
extremely rare in my experience. Packets with incorrect data are almost =
always the result of a configuration error.
The difference of whether this is processed in kernel or user space has =
very little impact on the troubleshooting process in most real world =
scenarios.
Owen
