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net: cannot send multicast using ListenPacket("udp4", "") on Windows 10 (1909) #37998
Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
What version of Go are you using (
Does this issue reproduce with the latest release?
Yes, with 1.14 and 1.14.1 ( never tested earlier )
What operating system and processor architecture are you using (
What did you do?
Single file in directory: mctest_test.go :
udp port 1982.
What did you expect to see?
Expected 2 packets with source = "ip-of-my-ethernet", target "mulicast address", one using Ethernet interface and one using loopback interface
What did you see instead?
Sometimes everything is right ( I see everything as expected ). And sometimes I see
1 packet with source = "127.0.0.1", target "mulicast address", using loopback interface.
I can not determine, what happens with my envinronment to "switch" this behaviour. After system reboot I can see it working and some time after it stops, ot vice-versa.
Wireshark shows OK
Wireshark shows NOT OK
Sorry I have no screenshot now. It happens periodically each few days. I try add later
Update: Added Screenshot
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