There may be other problems, but the use of single quotes prevents $device from being interpolated in: 
$telnet->waitfor('/$device"."# /i');   ##wait for prompt

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Does using the following instead help get rid of errors? 
$telnet->waitfor( qq{/$device"."# /i} );   ##wait for prompt

[download]

In reply to Re: Problem with Net::Telnet by frozenwithjoy
in thread Problem with Net::Telnet by SDN

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