corrected logic of prefix comparison in getifaddr. (older versions can't tell fec0::/10 from fe80::/10.)
corrected logic of prefix comparison in getifaddr.
(older versions can't tell fec0::/10 from fe80::/10.)

MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame