Any reason to not implement VRRP in FreeBSD?

Hi all,

Currently, i'm investigating solutions in order to ensure some
redundancy at the IP level. More specifically, i'm looking into CARP and
VRRP.
As i'm having a look at the CARP implementation, one question did arise:
Is there currently any reason to not have an implementation of VRRP
inside FreeBSD?
I understand that this made sense at a time due to CISCO patents, but
according to Wikipedia, it seems that those patents did expire some
years ago.
So, would there still be legal issues about this or is FreeBSD now free
to have its own VRRP implementation?

Regards,
Nicolas Masse.