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net: Error when running concurrent DNS queries using cgo on MacOS #30521
What version of Go are you using (
I've been taking a look at the lookup code, and it looks like the problem is here:
The lookup group will only allow 1 query to run even when they are using different values for the
A possible fix would be to change the key for the lookup group to be
Also, from the Git history it looks like this didn't change for 1.12 so this does not explain why this used to work on 1.11.