Repository failure

While trying to update my Trisquel 6.0 installation, the following error message appears when downloading repository information:

W:Failed to fetch ftp://in.archive.trisquel.info/trisquel/dists/toutatis/Release.gpg Could not connect to in.archive.trisquel.info:21 (115.249.2.253). - connect (113: No route to host)
, W:Failed to fetch ftp://in.archive.trisquel.info/trisquel/dists/toutatis-security/Release.gpg Unable to connect to in.archive.trisquel.info:ftp:
, W:Failed to fetch ftp://in.archive.trisquel.info/trisquel/dists/toutatis-updates/Release.gpg Unable to connect to in.archive.trisquel.info:ftp:
, W:Failed to fetch ftp://in.archive.trisquel.info/trisquel/dists/toutatis/main/source/Sources Unable to connect to in.archive.trisquel.info:ftp:
, W:Failed to fetch ftp://in.archive.trisquel.info/trisquel/dists/toutatis/main/binary-amd64/Packages Unable to connect to in.archive.trisquel.info:ftp:
, W:Failed to fetch ftp://in.archive.trisquel.info/trisquel/dists/toutatis/main/binary-i386/Packages Unable to connect to in.archive.trisquel.info:ftp:
, W:Failed to fetch ftp://in.archive.trisquel.info/trisquel/dists/toutatis/main/i18n/Translation-en Unable to connect to in.archive.trisquel.info:ftp:
, W:Failed to fetch ftp://in.archive.trisquel.info/trisquel/dists/toutatis-security/main/source/Sources Unable to connect to in.archive.trisquel.info:ftp:
, W:Failed to fetch ftp://in.archive.trisquel.info/trisquel/dists/toutatis-security/main/binary-amd64/Packages Unable to connect to in.archive.trisquel.info:ftp:
, W:Failed to fetch ftp://in.archive.trisquel.info/trisquel/dists/toutatis-security/main/binary-i386/Packages Unable to connect to in.archive.trisquel.info:ftp:
, W:Failed to fetch ftp://in.archive.trisquel.info/trisquel/dists/toutatis-security/main/i18n/Translation-en Unable to connect to in.archive.trisquel.info:ftp:
, W:Failed to fetch ftp://in.archive.trisquel.info/trisquel/dists/toutatis-updates/main/source/Sources Unable to connect to in.archive.trisquel.info:ftp:
, W:Failed to fetch ftp://in.archive.trisquel.info/trisquel/dists/toutatis-updates/main/binary-amd64/Packages Unable to connect to in.archive.trisquel.info:ftp:
, W:Failed to fetch ftp://in.archive.trisquel.info/trisquel/dists/toutatis-updates/main/binary-i386/Packages Unable to connect to in.archive.trisquel.info:ftp:
, W:Failed to fetch ftp://in.archive.trisquel.info/trisquel/dists/toutatis-updates/main/i18n/Translation-en Unable to connect to in.archive.trisquel.info:ftp:
, E:Some index files failed to download. They have been ignored, or old ones used instead.

What is wrong here?