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what happens when you run
`aws sts get-caller-identity` ?

I get the expected reply:
```{
    "UserId": "*****",
    "Account": "******",
    "Arn": "arn:aws:iam::******:user/******"
}```

Additional fact: in other project with the similar _pulumi/aws_ setup, basically another project repo, it works just fine.

... looking deeper I found out that the problem occurs on this new macbook pro (M1 chip) when calling:
*aws.getPartition(),*
*aws.getRegion(),*
*aws.getCallerIdentity()*

You may have run into <https://github.com/pulumi/pulumi-aws/issues/2144>?

Thanks for the help. I tried many things.. and after all my problem was an unknown DNS IPv6 address at my laptop.
After removed everything is working fine again.
(I just don't know where it came from)