04.05.2020, 07:23, "Guy Yur" <[email protected]>:
> Hi,
>
> ------ Original Message ------
> From: "Alexander V. Chernikov" <[email protected]>
> To: "Steffen Christgau" <[email protected]>; "[email protected]"
> <[email protected]>
> Sent: 2020-05-03 11:42:07
> Subject: Re: Notification about tentative IPv6 address from route socket
>
>> 30.04.2020, 17:40, "Steffen Christgau" <[email protected]>:
>>> Hi everybody,
>> Hi Steffen,
>>> ...
>>>
>>> 1) Is there a way to get notified about the address being available for
>>> usage (i.e. not tentative anymore, not duplicated) without _polling_ via
>> Not that I'm aware of :-(
>>> ...
>>>
>>> 2) I know FreeBSD is not Linux, but on Linux with netlink sockets I get
>>> notified about a) the address appearing (including flags) and b) some
>>> time later the address being not tentative anymore (detectable via
>>> flags). I wonder why the route socket on FreeBSD reports an address that
>>> is currently hardly to use. On the other hand, I understand that
>>> RTM_NEWADDR does exactly what is documented, i.e. to notify about an
>>> "address being added to iface". Nevertheless, wouldn't it make sense to
>>> tell an application that a change for an address takes place? I couldn't
>>> observe such a behavior for IPv6 on FreeBSD. If there is currently no
>>> really such notification, the kernel could emit a new message like
>>> RTM_ADDRCHANGE or it may repeats the emission of RTM_NEWADDR (which
>> It makes total sense. I have plans to update some rtsock internals and will
>> take a look at this one.
>> Thank you for your suggestion!
>
> There is a phabricator differential written by Roy Marples that does
> this:
> https://reviews.freebsd.org/D5469
Wow! Thank you for the pointing me to this review. Will look&test in a day or
two.
>
> Regards,
> Guy
>
>>> ...
>>>
>>> Regards, Steffen
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