Why the latest netinst image must "choose a mirror of the Debian archive" ?

[Cauchy Song <cauchy.song@gmail.com>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

http://cdimage.debian.org/cdimage/daily-builds/etch_d-i/

Why the latest netinst image must "choose a mirror of the Debian
archive" ?

If no internet connection, the installer fail, it realy ignore the
archive in the image !

Cauchy

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.2 (MingW32)

iD8DBQFEO26C90pbDJCgbHoRAnZAAKCTMm/krA+otBOBNObWsO3XeCBD4gCfSeWi
HHJiSGYLqgkbbuXnlXSMfQg=
=qf0J
-----END PGP SIGNATURE-----