There is a client Application which play voice message by clicking on play button and this play button disable/enable according to a given response by server. Application send a request to server using jquery to load .swf file and it able to load .swf files in IPV4 and IPV6 network both. There are some action script files and using those script file a .swf file created which actually loaded.
Now there is a second request to server to established RTMP connection and this connection failed to estabished in IPV6 network, it fine with IPV4 network.
When try to establish RTMP connection, two objects come into picture
1) netconnection to make connection with server
2) netstream to established streaming between client flash player and server
Note: Sending request to server using IPV6 address with square bracket.