Proxy authentication with Negotiate uses wrong host

Hi folks,

I am trying to make Subversion run with our ISA proxy which advertises Proxy-Authenticate: Negotiate, NTLM, Basic.

My Subversion version is: 1.6.7 on Windows XP, tried with 1.7-beta3 which even did not want to accept the URL. The HTTP lib is neon because serf quit working with "svn: Error running context: Internal error".
This is the UA sent by Subversion: SVN/1.6.17 (r1128011) neon/0.29.6

Now, when the proxy server challenges Subversion to authenticate, Subversion tries to retrieve a service ticket for the target host /instead of/ for the proxy host. I debugged that in a Wireshark session.
Should I file a bug report?

I already sent a mail to TortoiseSVN ml [1] but was redirected here because it uses Subversion libs to perform authentication.

A very interesting point is that I am running the same setup on FreeBSD and the service ticket is successfully obtained for the proxy server.

Mike

[1] http://tortoisesvn.tigris.org/ds/viewMessage.do?dsForumId=4061&dsMessageId=2825191

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