Incomplete realization of http digest auth

Binary package hint: wget

Short summary: Wget doesn't use qop section in WWW-Authenticate header, thus sending incorrect Authorization header.

I have digest auth implemented in php, taken from here http://php.net/manual/en/features.http-auth.php, see Example #2.
Executing wget:
conf@conf:~$ wget -d http://www.mp3.dz/test.php --user=guest --password=guest -o wget.log
Setting --user (user) to guest
Setting --password (password) to guest
Setting --output-file (logfile) to wget.log
conf@conf:~$ echo `cat test.php`
Wrong Credentials!

As you can see authorization didn't work because server said
WWW-Authenticate: Digest realm="Restricted area",qop="auth",nonce="4b8bbfc607c5f",opaque="cdce8a5c95a1427d74df7acbf41c9ce0"
and wget answered
Authorization: Digest username="guest", realm="Restricted area", nonce="4b8bbfc607c5f", uri="/test.php", response="c3f3bda7a96ec0315d8647336b8a1204", opaque="cdce8a5c95a1427d74df7acbf41c9ce0"

As rfc2617 said (http://tools.ietf.org/html/rfc2617#ref-message-qop page 11)

   qop
     Indicates what "quality of protection" the client has applied to
     the message. If present, its value MUST be one of the alternatives
     the server indicated it supports in the WWW-Authenticate header.
     These values affect the computation of the request-digest. Note
     that this is a single token, not a quoted list of alternatives as
     in WWW- Authenticate. This directive is optional in order to
     preserve backward compatibility with a minimal implementation of
     RFC 2069 [6], but SHOULD be used if the server indicated that qop
     is supported by providing a qop directive in the WWW-Authenticate
     header field.

qop should be used if the server indicated that it is supported.

By the way, curl is working just fine.
conf@conf:~$ curl -vu guest:guest --anyauth -D headers.txt http://www.mp3.dz/test.php 2> curl.log > test.php
conf@conf:~$ echo `cat test.php`
Your are logged in as: guest
conf@conf:~$

Additional info:
conf@conf:~$ lsb_release -rd
Description: Ubuntu 9.10
Release: 9.10
conf@conf:~$ apt-cache policy wget
wget:
  Установлен: 1.11.4-2ubuntu2
  Кандидат: 1.11.4-2ubuntu2
  Таблица версий:
 *** 1.11.4-2ubuntu2 0
        500 http://ubuntu.snet.uz karmic/main Packages
        500 http://ubuntu.uz karmic/main Packages
        100 /var/lib/dpkg/status