[App Service] Fix #26647: az webapp show: Remove duplicate IPs from o…

…utbound addresses (#26738)

src/azure-cli/azure/cli/command_modules/appservice/custom.py

@@ -68,7 +68,7 @@
                     _normalize_location,
                     get_pool_manager, use_additional_properties, get_app_service_plan_from_webapp,
                     get_resource_if_exists, repo_url_to_name, get_token,
-                    app_service_plan_exists, is_centauri_functionapp)
+                    app_service_plan_exists, is_centauri_functionapp, _remove_list_duplicates)
 from ._create_util import (zip_contents_from_dir, get_runtime_version_details, create_resource_group, get_app_details,
                            check_resource_group_exists, set_location, get_site_availability, get_profile_username,
                            get_plan_to_use, get_lang_from_content, get_rg_to_use, get_sku_to_use,
@@ -993,6 +993,7 @@ def show_app(cmd, resource_group_name, name, slot=None):
     if not is_centauri_functionapp(cmd, resource_group_name, name):
         _rename_server_farm_props(app)
         _fill_ftp_publishing_url(cmd, app, resource_group_name, name, slot)
+        _remove_list_duplicates(app)
     return app
 
 

src/azure-cli/azure/cli/command_modules/appservice/utils.py

@@ -211,6 +211,15 @@ def _normalize_location(cmd, location):
     return location
 
 
+def _remove_list_duplicates(webapp):
+    outbound_ips = webapp.possible_outbound_ip_addresses.split(',')
+    outbound_ips_list = list(dict.fromkeys(outbound_ips))
+    outbound_ips_list.sort()
+    outbound_ips = ','.join(outbound_ips_list)
+    del webapp.possible_outbound_ip_addresses
+    setattr(webapp, 'possible_outbound_ip_addresses', outbound_ips)
+
+
 def get_pool_manager(url):
     proxies = urllib.request.getproxies()
     bypass_proxy = urllib.request.proxy_bypass(urllib.parse.urlparse(url).hostname)