root@srv:/etc/apt# apt-get install unzip
Reading package lists... Done
Building dependency tree
Reading state information... Done
Suggested packages:
  zip
The following NEW packages will be installed:
  unzip
0 upgraded, 1 newly installed, 0 to remove and 91 not upgraded.
Need to get 157 kB of archives.
After this operation, 395 kB of additional disk space will be used.
Get:1 http://security.ubuntu.com/ubuntu/ trusty-security/main unzip amd64 6.0-9ubuntu1.5 [157 kB]
Fetched 83 B in 0s (595 B/s)
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/u/unzip/unzip_6.0-9ubuntu1.5_amd64.deb  Size mismatch

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