# ee /etc/make.conf
在最后添加：
FETCH_CMD=axel
FETCH_BEFORE_ARGS=-n 10 -a
FETCH_AFTER_ARGS=
DISABLE_SIZE=yes
MASTER_SITE_OVERRIDE?= \
ftp://ftp.cn.FreeBSD.org/pub/FreeBSD/ports/distfiles/${DIST_SUBDIR}/\
ftp://ftp2.cn.FreeBSD.org/pub/FreeBSD/ports/distfiles/${DIST_SUBDIR}/
MASTER_SITE_OVERRIDE?= ${MASTER_SITE_BACKUP}
