AFAIK, IO::Socket::INET->new() does not set $!,

Quite the opposite. It's the only module I know that does set $! even for errors not originating from system calls. That could account for the error message mismatch.

In reply to Re^2: Could not create socket: Bad file number by ikegami
in thread Could not create socket: Bad file number by perlofwisdom

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