mirror.anl.gov .... is no longer a valid hostnameI have previously seen a notice that Argonne National Labs will no longer host a Debian mirror.
So this should be a permanent change to: https://www.debian.org/mirror/list and any other pages where it appears https://www.mail-archive.com/debian-www@lists.debian.org/msg42807.html p.s. host details here, https://www.mail-archive.com/debian-www@lists.debian.org/msg42804.html