Failed to fetch

[Hildermes José Medeiros Filho]

Hello, I can't install libvtk6-dev it always says failed to fetch:

Err:1 http://br.archive.ubuntu.com/ubuntu xenial/universe amd64 libvtk6-java amd64 6.2.0+dfsg1-10build1
  Connection failed [IP: 200.236.31.4 80]
Err:2 http://br.archive.ubuntu.com/ubuntu xenial/universe amd64 libvtk6-dev amd64 6.2.0+dfsg1-10build1
  Connection failed [IP: 200.236.31.4 80]
E: Failed to fetch http://br.archive.ubuntu.com/ubuntu/pool/universe/v/vtk6/libvtk6-java_6.2.0+dfsg1-10build1_amd64.deb Connection failed [IP: 200.236.31.4 80]

E: Failed to fetch http://br.archive.ubuntu.com/ubuntu/pool/universe/v/vtk6/libvtk6-dev_6.2.0+dfsg1-10build1_amd64.deb Connection failed [IP: 200.236.31.4 80]

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