On Mon, Feb 18, 2013 at 5:29 PM, Bruce Perens <[email protected]> wrote:

> I think the community is still small and localized enough that we can
> have a flag day. We will announce that after a certain date we expect
> everyone to use the new binary on the air.
>
> This time. We need a better method next time.

I think the ham situation is rather different from non-ham, and
the situation also depends on where in the stack you have an
incompatibility. The recent problem was kind of analogish;
a version number wouldn't have helped.

Loading different versions of the library depending on the date
of connection initiation could work out well. The library version
number could even be set to the switchover date. For example,
a libfoo.so.2013.4.18 would replace prior versions on that date.
This does require insisting that the library be loaded via dlopen
or similar. Also, insist on UTC! Note that apps supporting more
than one connection would need to have more than one library
loaded until all the old connections are terminated.

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