Dedicated IP for the Domain Mapping & Name Severs

Can the dedicated IP for the Domain Mapping plugin be on the same IP as one of my name servers?

One of my name servers is the primary shared IP.
ns1.mydomain.com is on that address.

ns2.mydomain.com is on a IP that is totally free other than being used for the name server the ns2.mydomain.com name server.

I have two other IP Addresses available, one is already used for a domain that is running the Domain Mapping plugin. So that only leaves one IP other than the one that is associated with ns2.mydomain.com.

I would like to use the IP that ns2.mydomain.com is on if I can. Is that possible?

The reason I care is that I need to set up a number of WP Networks running Domain Mapping so it if I can use the one with my second name serve that would be one less I would need to get for other projects.

Thanks for you time in advance.

Cheers,
Sean