[147917] in North American Network Operators' Group
Re: IPv6 RA vs DHCPv6 - The chosen one?
daemon@ATHENA.MIT.EDU (Valdis.Kletnieks@vt.edu)
Tue Dec 27 18:30:10 2011
To: Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp>
In-Reply-To: Your message of "Wed, 28 Dec 2011 07:49:21 +0900."
<4EFA4B71.20401@necom830.hpcl.titech.ac.jp>
From: Valdis.Kletnieks@vt.edu
Date: Tue, 27 Dec 2011 18:28:40 -0500
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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On Wed, 28 Dec 2011 07:49:21 +0900, Masataka Ohta said:
> Valdis.Kletnieks@vt.edu wrote:
> > Especially when some of the biggest IPv6 networks out there are still using
> > it pretty heavily.
> That's not a valid counter argument against people who
> found problems in certain environment.
>
> IPv6, as is, might work well under some environment assumed by
> IPng/IPv6 WG, a committee. The environment may be large.
> IPv6 does not work well in many environments.
Feel free to try to deprecate *everything* that doesn't work well in many
environments. Heck, SMTP doesn't work well in many environments (it's done in
cleartext unless you deploy STARTTLS, it's subject to spamming, etc etc) - but
I don't see you leading a charge to deprecate SMTP. Probably because you
actually use it, even though it's totally unsuitable for many environments.
It's one thing to deprecate something that's obviously a complete failure or
has reached historic status - but RA isn't either of those *yet*.
> In this case, the following statement in RFC1883:
> > If the minimum time for rebooting the node is known (often more than
> > 6 seconds),
> is the wrong assumption which made RA annoying.
Oddly enough, a lot of us are running on networks where assuming this about end
user gear is perfectly reasonable. We haven't seen many consumer-grade
Windows, Macs, or Linux boxes that are able to reboot in much under 6 seconds.
Yes, I know you can do it with careful tuning and throwing SSDs and other
hardware at it - doesn't mean it's common. Most of the time, any gains made in
boot speed are immediately wiped out with "since it boots 10% faster, we can
start 10% more stuff..."
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