Freebsd Make.conf

[bash]MASTER_SITE_BACKUP?= \
ftp://ftp.freebsd.org.cn/pub/FreeBSD/ports/distfiles/${DIST_SUBDIR}/\
ftp://ftp.freebsdchina.org/pub/FreeBSD/ports/distfiles/${DIST_SUBDIR}/

MASTER_SITE_OVERRIDE?= ${MASTER_SITE_BACKUP}
[/bash]