SOLMAN_SETUP/ preparation phase 5.1 configure web dispatcher config failed.

L3 - Failed to reach test WS through System Settings (ICM/HTTPURLLOC):
http://vip.myfqdn.fr:80
L2 - Test WS can be reached through ICM:
http://hostname.myfqdn.fr:8000

SOAP:1.023 SRT: Processing error in Internet Communication Framework: ("ICF Error when receiving the response: ICM_HTTP_CONNECTION_FAILED")

Solman is located in a DMZ, http/https are configurated in table
HTTPURLOCandload balancer  is used to publish http and https url and port redirection

instead of native url « hostname » + default port (80xx / 443xx)

• In DMZ for url
http://hostname.myfqdn.fr:8000/ManagedSetupWS/Config1?style=document
system answer is OK

• In LAN via Load balancer url return KO message

http://vip.myfqdn.fr:8000/ManagedSetupWS/Config1?style=document