.net core 8 UDP Socket gets stuck on the first endpoint it sends to

[moustakakisCon]

Description

in .net core 8 (dotnet-sdk-8.0.203) the UDP socket will only send to the first endpoint used. trying to send to another endpoint ends up sending it in the first one used.

Reproduction Steps

[not available at the moment]

Expected behavior

Expected behaviour is for the socket to be able to send to the endpoint provided

Actual behavior

Actual behaviour is that the socket will only send to the first endpoint used.

Regression?

issue is not present in .net core 6 nor .net core 7

Known Workarounds

No response

Configuration

No response

Other information

No response

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[MichalPetryka]

Duplicate of #97965?

[wfurt]

It would be great if you can try the 9.0 build @moustakakisCon https://github.com/dotnet/installer
I'm trying to get the fix to servicing #99695

[wfurt]

this was fixes in 9.0 by #98134. Backport is waiting for approval.

[moustakakisCon]

@wfurt i can confirm that in dotnet-sdk-9.0.100-preview.3.24165.20-win-x64 the issue is fixed

[karelz]

Duplicate of #97965