Access postgre Host via Name and IP6?

is there a special trick to access a postgre database host by name if he use ip6?

i can access this server by ip4 but not by name in host property.
if i do tracert (in windows cmd) with the server name it response as ip6.
connecting via ip4 a simple query with few data appear also slow for some reason.
i guess it belongs resolving the host name.