Mozilla and IPv6

Hello. I have noticed a different behaviour of Mozilla on SuSE 8.0 and FreeBSD. I'm running with IPv6 enabled, and Mozilla has no problems talking to the remote host running IPv6 as well. However, when the remote host is running IPv6, but only listening to http requests on IPv4, I get a 'connection refused' message. On FreeBSD, Mozilla falls back to IPv4 and then displays the requested site just fine. Is there any way to get this behaviour on my SuSE machine? Thanks in advance. -- Best regards Christian Laursen