Entries in your /etc/hosts file will confuse the alias detection for the listed hosts. Workaround: do not use aliases, but only the primary name on the command line.
When continuing a download, ALL already complete files are scanned for links, as we have no reliable means of detecting the file type.
Debian 12 (Bookworm) to Debian 6.0 (Squeeze): the text shown here
Debian 5.0 (Lenny) to Debian 3.1 (Sarge)
Debian 3.0 (Woody)
-F until Debian 3.0 (Woody);
-O until Debian 3.0 (Woody);
-P until Debian 3.0 (Woody);
-Q until Debian 3.0 (Woody);
-Qt until Debian 3.0 (Woody);
-Qu until Debian 3.0 (Woody);
-Tc until Debian 3.0 (Woody);
-Td until Debian 3.0 (Woody);
-Tl until Debian 3.0 (Woody);
-U until Debian 3.0 (Woody);
-c until Debian 3.0 (Woody);
-d until Debian 3.0 (Woody);
-h until Debian 3.0 (Woody);
-i until Debian 3.0 (Woody);
-iU until Debian 3.0 (Woody);
-ib until Debian 3.0 (Woody);
-lb until Debian 3.0 (Woody);
-lc until Debian 3.0 (Woody);
-ld until Debian 3.0 (Woody);
-ll until Debian 3.0 (Woody);
-nR until Debian 3.0 (Woody);
-na until Debian 3.0 (Woody);
-nb until Debian 3.0 (Woody);
-nc until Debian 3.0 (Woody);
-nd until Debian 3.0 (Woody);
-nf until Debian 3.0 (Woody);
-ng until Debian 3.0 (Woody);
-nh until Debian 3.0 (Woody);
-ni until Debian 3.0 (Woody);
-ns until Debian 3.0 (Woody);
-nt until Debian 3.0 (Woody);
-nw until Debian 3.0 (Woody);
-p until Debian 3.0 (Woody);
-r until Debian 3.0 (Woody);
-r+ until Debian 3.0 (Woody);
-r++ until Debian 3.0 (Woody);
-ri until Debian 3.0 (Woody);
-t until Debian 3.0 (Woody);
-u until Debian 3.0 (Woody);
-v until Debian 3.0 (Woody);
-vv until Debian 3.0 (Woody);
-vvv until Debian 3.0 (Woody);
-xE until Debian 3.0 (Woody);
-xH until Debian 3.0 (Woody);
-xb until Debian 3.0 (Woody);
-xd until Debian 3.0 (Woody);
-xe until Debian 3.0 (Woody);
-xg until Debian 3.0 (Woody);
-xi until Debian 3.0 (Woody);
-y until Debian 3.0 (Woody);
-yi until Debian 3.0 (Woody).