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//Hello Michiel,//

on *10.03.22* at *20:40:47* You wrote in Area *WINPOINT*
to *Tim Schattkowsky* about *"WinPoint Version 404 IPV5"*.

 TS>> Fully agree. However, since still the clients connects to the host, the
 TS>> debate becomes pointless for DS-Lite as in that case the host should
 TS>> only present an IPv6 address. So there is nothing to choose here anyway.

 MvdV> In the case of DS-Lite the host can add the IPv4 adress of a 4 to 6
 MvdV> proxy like feste-ip.net to make it possible for an IPv4 only client to
 MvdV> connect. I have added such a proxy just in case my provider decides to
 MvdV> put me on DS-Lite. 

Nice workaround and indeed worse than the direct connection. However, I
suppose this uses a different hostname than the IPv6 address of the same node
and thus again is no case where the client can choose? 

 MvdV> Also there are a few quircks in the Fidonet nodelist. Check out
 MvdV> 1:134/102 and 1:134/302. They present a link local IPv4 address that
 MvdV> can not be connected with.

Ouch. Why?

 MvdV> One should not assume that a node that is on a DS_Lite connection never
 MvdV> presents an IPv4 address in addition to IPv6 address(es)

For the same host name?

 TS>> On the other hand, I still cannot see any drawbacks of using IPv4 to
 TS>> connect a host that supports both IPv4 and IPv6. To put it differently:
 TS>> there is no actual advantage in using IPv6 (other than feeling cool), so
 TS>> whats wrong with using IPv4 that may actually still have compatibility.
 TS>> Once the connection is established its all the same anyway.

 MvdV> Being connectable by both IPv4 and IPv6 is not the ultimate goal of the
 MvdV> IPv4 to IPv6 transition. It does not end when everyone has IPv6. The
 MvdV> next step will be to get rid of IPv4. That will take a while but that
 MvdV> is where we are going. Anyone still being on IPv4 only or anyone giving
 MvdV> the impression of being IPv4 only is in the way of reaching that
 MvdV> ultimate goal. To speed up the transition anyone capable of IPv6 should
 MvdV> make IP6 connections for just this reason alone.

All true, but than again there will simply be no IPv4 address to choose ;)

Regards,
Tim

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