DHT in DC++, should i enable it?

DC client like EiskaltDC have DHT support:

Quote:

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Enable DHT by default. (Affects only new users.) In case you need you may
change this option at any time in Preferences dialog:
Connection --> Advanced --> Enable DHT.

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i am wondering if i should enable DHT while i am having already open port and DHT used in torrent client. If i should spend more computer resources enabling it.

Not sure if passive peers can connect DHT and if it is not redundant for me while i have open port.