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That's not correct, if that was the case, TCP applications in general would not work in anycast setups, which obviously isn't the case.
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<div>It's correct that if you'd end up getting rerouted all of a sudden, it would trigger a reset, but the application would (likely) still succeed after establishing the TCP connection again.</div>
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<div>Running DNS (and accepting TCP queries) in an anycasted setup is rather common :) I run a few of such setups.</div>
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<div>On 2 Apr 2023, at 14:08, Marco Mangione <marco.mangione@gmail.com> wrote:</div>
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<div dir="ltr">becouse of split path routing, there are 2 or more anycast node and network load balancing causes packet transmitted to the anycast address to alternate between those nodes</div>
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<div dir="ltr" class="gmail_attr">Il giorno dom 2 apr 2023 alle ore 08:59 Lucas Rolff <<a href="mailto:lucas@lucasrolff.com">lucas@lucasrolff.com</a>> ha scritto:<br>
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> Because if traffic is forced on TCP, for example with a TC=1, not everything could work correctly.<br>
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Why not?<br>
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> On 2 Apr 2023, at 13:55, Marco Mangione via dnsdist <<a href="mailto:dnsdist@mailman.powerdns.com" target="_blank">dnsdist@mailman.powerdns.com</a>> wrote:<br>
> <br>
> Hi everyone,<br>
> I would like to open a conversation about a dnsdist+pdns setup in anycast mode, therefore multiple locations with multiple instances inside.<br>
> All OK if we talk about UDP, but what about TCP? Has anyone had any experience?<br>
> <br>
> Because if traffic is forced on TCP, for example with a TC=1, not everything could work correctly.<br>
> <br>
> M1<br>
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