The wrong return value is set for the network connection of IPv6.

[ken4647]

It appears that getaddrinfo() is prone to failure in Musl. Further investigation revealed that this issue is related to the IPv6 protocol, as RuxOS does not yet support IPv6.

To be precise, I found a piece of code similar to this in musl libc:

#define EAFNOSUPPORT    97  /* Address family not supported by protocol */

However, the return value provided in the above figure is:

#define EINVAL          22     /* Invalid argument */

Therefore, it is currently necessary to fix this return value error or to add support for IPv6.