root@lubuntu:/# apt-get install grub2 --reinstall
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
  grub2
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 2,616 B of archives.
After this operation, 32.8 kB of additional disk space will be used.
Err http://ftp.tu-ilmenau.de/mirror/ubuntu/ utopic/universe grub2 i386 2.02~beta2-15
  Could not resolve 'ftp.tu-ilmenau.de'
E: Failed to fetch http://ftp.tu-ilmenau.de/mirror/ubuntu/pool/universe/g/grub2/grub2_2.02~beta2-15_i386.deb  Could not resolve 'ftp.tu-ilmenau.de'

E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
root@lubuntu:/#