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