(usagi-users 02425) How to change my default interface on ipv6

["Su Po-chou" <supc@xxxxxxxxxxxxxxxxxxxxxxx>]

Hello All,
              If I have two interfaces through the same gateway,
              for example:
                   interface A: 3ffe:3600:1a:1:250:baff:fee4:b77e/64
                   interface B: 3ffe:3600:1a:1:250:bfff:fe62:75a5/64 
             In the common sense, all connections from this host will 
             use one of  the interfaces to be the default output device
             Assume that interface A is default output device, how do 
             I change the default output device to B ?
             Thanks.

Best Regards,
Po-chou Su.