See https://metacpan.org/pod/LWP::UserAgent#ua-local_address-address

So 

 $test->local_address('127.1.2.3:45');
... $test->request ...
$test->local_address('127.5.4.3:21');
... $test->request ...

[download]

In reply to Re: Testing Dancer2 - simulating requests from different IP addresses by beech
in thread [Solved] Testing Dancer2 - simulating requests from different IP addresses by davies

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