安装后出现下面问题
You might want to run `apt-get -f install' to correct these:
The following packages have unmet dependencies:
libc6-xen: PreDepends: libc6 (= 2.7-18) but 2.7-18lenny2 is to be installed
pptpd: Depends: bcrelay but it is not going to be installed
Depends: ppp (>= 2.4.4) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).