Discovery w/o NTLM (using Kerberos)

All,

I am working with a client to implement discovery in a world where they have disabled NTLM and only are using Kerberos.  This (among other things) prevents a client from connecting to a Windows Server using known credentials and an IP address.   Which is Discovery's default way of connecting.

I am curious if anybody else has run into this situation and how you combatted it.

Thanks in Advance.