[sip-comm-dev] Licensing question: PircBot



I am investigating the use of SIP Communicator in a product developed by my
company, and see that SIP is licensed under the LGPL.

In evaluating the SIP source code, it appears that the IRC implementation is
based on the PircBot API. As far as I can tell, PircBot is licensed using
the GPL, not the LGPL.

Is such an arrangement allowed, or does SIP have an arrangement with
PircBot's owner?

I tried researching this in the mailing list archives, but could not find a
relevant discussion. If I missed it, please let me know.

Thank you,