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<DIV>> When I run PPPoE and Groupsock, the video transport program shut <BR>>down and print:<BR>><BR>> "00:00:11 Groupsock(10:239.255.42.42,1234,7): failed to join <BR>>group : setsockopt( IP_ADDR_MEMBERSHIP) error : No such device.<BR><BR>The problem is apparently that multicast is not configured (at least <BR>not properly) for your network device.<BR></DIV>
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<DIV> Yes, I do nothing but run the program below, just like your testprog:</DIV>
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<DIV> Groupsock rtpGroupsock(*env, destinationAddress, rtpPort,ttl);</DIV>
<DIV> Groupsock rctpGroupsock(*env, destinationAddress, rtcpPort,ttl);</DIV>
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<DIV> How to config my network device? Is it in my linux system? Maybe I should understand multicast deeply.</DIV>
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<DIV> Thanks!!!</DIV></DIV>
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