[Q] proxy@sol11-zones vs. IPS

hello hello,

we are trying to install zones from the official repository (solaris/support)
using a proxy with authentication to the internet.

within the global zone, you can set an env-var for $http_proxy and
$https_proxy defining your proxy user:
# export http_proxy='http://WIN-DOMAIN\user:[email protected]:8080'
# export https_proxy='https://WIN-DOMAIN\user:[email protected]:8080'

(-> just want to say, that our passwords ends with an exclamation mark "!",
if
that could be a problem)

This works perfect for the global zone, no issues with IPS/pkg, btw. we are
running Solaris 11 11/11 SRU 12.4.
BUT the zone-installer is not able to connect to the oracle publisher issuing
"# zoneadm -z foo install"

Dr. Google says, that you can define proxy settings if you want to use zones
behind a proxy
# svccfg -s svc:/application/pkg/system-repository:default setprop
config/http_proxy=astring: "https://proxy:port"

source: http://docs.oracle.com/cd/E23824_01/html/821-1460/glqjr.html

we tried:
svc:/application/pkg/system-repository:default> setprop config/http_proxy =
http://WIN-DOMAIN\user:[email protected]:8080<http://domain/usr:pwd@p
roxy:8080>

but refresh/restart the SMF-service fails with:
[ Oct 16 15:47:03 Executing refresh method ("/lib/svc/method/svc-pkg-sysrepo
refresh"). ]
Syntax error on line 243 of /system/volatile/pkg/sysrepo/sysrepo_httpd.conf:
ProxyRemote: Bad syntax for a remote proxy server (bad port number)

In this 243 Line we have:
ProxyRemote http http://WIN-DOMAIN\\user:[email protected]:8080

we tried several escape-characters and combinations by setting the
http-string
with " ' ` 4 and so on... always the same error message.

any ideas what is the RIGHT SYNTAX for DEFINING the AUTHENTICATION in the
PROXY-STRING or HOW TO SET the PROXY-USER ;)

thanks in advance,
regards
- pressy