[tyingq]

It may be fixed now, but devil's in the details. As one example, musl has (or had) chronic issues with it's dns resolver and large responses.

[optionalsquid]

Definitely. I haven't tried building anything that requires DNS using musl, but I've had to work around musl's much, much slower malloc implementation

The musl wiki lists a number of differences between it and glibc that can have an impact:

https://wiki.musl-libc.org/functional-differences-from-glibc...