doc: Update service Domains property description

diff --git a/doc/service-api.txt b/doc/service-api.txt
index a75727d..7cc6fb4 100644 (file)
--- a/doc/service-api.txt
+++ b/doc/service-api.txt
@@ -282,7 +282,9 @@ Properties  string State [readonly]
 
                array{string} Domains [readonly]
 
-                       The list of currently used search domains.
+                       The list of currently used search domains taken
+                       from Domains.Configurations if set, otherwise a
+                       domain name if provided by DHCP or VPNs.
 
                array{string} Domains.Configuration [readwrite]