IPV6_RECVPKTINFO not working for IPv4-mapped addresses on Linux?

Gert Doering gert at space.net
Mon Jan 20 18:00:19 CET 2014


On Mon, Jan 20, 2014 at 04:01:23PM +0000, Benedikt Stockebrand wrote:
> Anyway, if you really want to make your life miserable, open sockets
> bound to the individual IP addresses found on the machine---and then
> also listen on a routing socket so you know you have to look for new
> addresses coming in...  (Last time I checked that was pretty much the
> only option you had with Java.)

*That* is where we will *not* go.  It's what bind and ntpd do, and it's
a large can of different worms we do not like either :-)

And the #ifdef list for "how do I find out which interfaces exist on
this system?" is just so slightly longer than "how do I get target 
addresses out of ancilliary data" :-)

Gert Doering
        -- NetMaster
have you enabled IPv6 on something today...?

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