我在Debian 6下，默认用的是stable，但是某个包我想安装testing或unstable中的版本。确定testing，unstable中有新版，但是用下面的命令，不行。
$ apt-get -t testing openswan
Reading package lists... Done
Building dependency tree
Reading state information... Done
openswan is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
试过backports，也是一样的问题。是哪里需要再配置吗？
好多年不用Linux了。。。
$ apt-get -t testing openswan
Reading package lists... Done
Building dependency tree
Reading state information... Done
openswan is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
试过backports，也是一样的问题。是哪里需要再配置吗？
好多年不用Linux了。。。
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