FreeBSD 6.2里面早就没有/etc/default/make.conf了，晕，害我找了半天
MASTER_SITE_OVERRIDE?=\
http://ports.hshh.org/${DIST_SUBDIR}/\
ftp://ftp.tw.freebsd.org/pub/FreeBSD/ports/distfiles/${DIST_SUBDIR}/\
ftp://ftp.jp.freebsd.org/pub/FreeBSD/ports/distfiles/${DIST_SUBDIR}/\
ftp://ftp.freeBSDchina.org/pub/FreeBSD/ports/distfiles/${DIST_SUBDIR}/
MASTER_SITE_OVERRIDE?=${MASTER_SITE_BACKUP}
