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  3. May 2024

Re: Assigning IP address to HTTP Server

Hello Raul,

Am 21.05.2024 um 01:38 schrieb Raul Alberto Jager Weiler <raul.jager@xxxxxxxxx>:

The "Happy eyeballs" was intended to encourage the use of IPv6, but it back-fired.
The system tried to connect using IPv6, and if it failed tries IPv4. Having IPv6 it makes it much faster, but if IPv6 failed IPv4 took longer. Result: advise to disable IPv6.

Thanks for the explanation. Never heard of this term before.

What you describe is normal behavior on all OS I know. If a DNS lookup returns an IPv6 address, this is tried. If it doesn't work (timeout, connection refused, etc.) IPv4 is tried, sometimes with the delay you've described.

Advise: Get your stuff configured properly, then there's no need to disable IPv6. :-)

:wq! PoC


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