Enabling ipv6 in only one interface

[carlopmart]

Hi all,

 Somebody knows how can I enable ipv6 in only one interface?? How can I do?? I 
have an openbsd 4.3 server with 6 interfaces and I need to setup ipv6 only in 
one interface to test some services.

Many thanks.

--
CL Martinez
carlopmart {at} gmail {d0t} com