gethostbyname relies on a functioning DNS system. Make sure things like nslookup and traceroute work properly. The other place you might be going wrong is that in a scalar context, gethostbyname returns the packed ip address, though I'm not sure why you're looking up the hostname from a hostname to begin with.

As for the printing issue, I suspect that you are Suffering from Buffering.

Update: oops, gethostbyname is irrelevant here but the DNS still needs to work.

In reply to Re^4: Socket deadlock doubt in code by rowdog
in thread Socket deadlock doubt in code by sajanagr

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