we get those from the web site...

CC: (none) => thierry.vignaud
Assignee: thierry.vignaud => bugsquad

Yes but it works using the same vm with the 4.1 iso and http://mirrors.mageia.org/api/basic.5.x86_64.list is accessible

In the log I see 

HTTP: connecting to mirrors (...)
getaddressinfo: no address associated with hostname
HTTP: unable to get mirrorlist from ... api/5/basic.x86_64.list

while on 4/ I see is-at: 215 ...

So that's why I think something is broken in stage1

Humm.
In the old days, we used gethostby*() with dietlibc.
Then we switched from gethostby*() to getaddrinfo():

http://gitweb.mageia.org/software/drakx/log/mdk-stage1/dns.c

Then we switched from dietlibc to glibc when using dracut (which makes use gethostby*() again).
Just after mga4, I made us use the same code with glibc that we used with dietlibc:
http://gitweb.mageia.org/software/drakx/commit/mdk-stage1/dns.c?id=6d8df12830883d6537e6844a6deae8adb8bfe37c

This seems to be the root cause of this issue.
Maybe glibc's resolver needs some file we lack?
But why would it work with gethostby*() but not with getaddrinfo()

CC: (none) => mageia, mageia

We don't seem to have libnss_dns.

Adding inst_libdir_file "libnss_dns.so.*" at a random place in /usr/lib/dracut/modules.d/90mgainstaller/module-setup.sh seems to have fixed it.

CC: (none) => pterjan

Thanks!
Upload of dracut in progress, I'll rebuild d-i*images with it

Fixed, thanks

Status: NEW => RESOLVED
Resolution: (none) => FIXED