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Re: IPV6 in enterprise best practices/white papaers
From: Mark Andrews <marka () isc org>
Date: Mon, 28 Jan 2013 10:36:17 +1100

In message <CAPYK2_xonYrKqRLMJBVD26JsCEX5jDBjYQU3h_2sBbFVg3uBVw () mail gmail com>, Harald Koch writes:
On 26 January 2013 17:38, Mark Andrews <marka () isc org> wrote:
As for "breaking" your LAN, if the applications take 60 seconds to
fallback to the other address they were already broken.  Go complain
to your application vendor.  Some vendors have already fixed this
problem with their applications.

The question was about *enterprise* deployment, which raises two issues:

1) most vendors are waiting for customer IPv6 demand before
implementing support (or fixing bugs) - chicken and egg problem.

This is not a IPv6 bug.  The bug is present in IPv4 only networks.
It is a bug in the applications multi-homing support.  Adding IPv6
just makes every destination multi-homed.  Just think about how
much money has already been spent to work around this bug.

2) I don't know many enterprises running production software less than
a year (or more) old.

In the meantime, the network engineers struggling with this stuff need
workarounds (like the tuning parameters you and others have


Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka () isc org

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