$pro is defined in your code snippet and would resolve to a Net::Telnet object reference in your telnetDisconnect call.

It looks to me like $pro gets overwritten in some of the code you've removed while creating your test case above. Check your code for incorrect $pro assignments.

In reply to Re: How to close a telnet connection when using strict by Jonathan
in thread How to close a telnet connection when using strict by han_perl

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