freebsd ports fetch 安装失败以后……

portsnap fetch

Looking up portsnap.FreeBSD.org mirrors... 6 mirrors found.
Fetching snapshot tag from your-org.portsnap.freebsd.org... done.
Fetching snapshot metadata... done.
Fetching snapshot generated at Sun May 26 20:02:39 EDT 2013:
fetch: [url]http://your-org.portsnap.freebsd.org/s/ecc705a413e04a7c6eafdc110161ed9e1d6efd52224e7a9c93775bcc62c29ebb.tgz:[/url] Requested Range Not Satisfiable

出现问题的缘由：由于各类缘由portsnap fetch完以后，尚未检查完中断了，致使没法再次使用这个命令，前也不是后也不是。

解决方案：删掉重来吧。

rm -rf /var/db/portsnap/*
portsnap -s isc.portsnap.freebsd.org fetch
portsnap extract
portsnap fetch update