Merge pull request #3742 from gabriel-desmarchelier/add-preference-pva-enable-ipv6

add preference : epics_pva_enable_ipv6

Author: shroffk

core/pv-pva/src/main/java/org/phoebus/pv/pva/PVA_Preferences.java

@@ -62,6 +62,7 @@ public void installPreferences() throws Exception
                                 "epics_pva_addr_list",
                                 "epics_pva_auto_addr_list",
                                 "epics_pva_name_servers",
+                                "epics_pva_enable_ipv6",
                                 "epics_pva_server_port",
                                 "epics_pva_broadcast_port",
                                 "epics_pva_conn_tmo",

core/pv-pva/src/main/resources/pv_pva_preferences.properties

@@ -26,6 +26,11 @@ epics_pva_auto_addr_list=
 # Name servers used for TCP name resolution.
 epics_pva_name_servers=
 
+# PVAccess enable IPv6.
+#
+# :format: `true` or `false`
+epics_pva_enable_ipv6=
+
 # :::{caution}
 # The following parameters should best be left
 # at their default.