__NR_kill writes: While there is much hype about many of the advantages of Windows Vista and Ubuntu Linux and which one is better for what, are they actually IPv6 ready? It seems not. The newly installed Ubuntu 7.04 loads automatically the ipv6 kernel module, which in my case (IPv4 only network), dropped the network throughput from 100mbps to about 10mbps. I wondered why for about a week, until I came across this funny thread, explaining it all. Then I remembered having a client running Windows Vista and complaining about p2p programmes killing completely his network to the point that Firefox failed loading the homepage (google). I gave it a try — I disabled IPv6 for the network interfaces of his Vista box, rebooted and the p2p programs were not affecting in any way the overall network performance. Two different operating systems — same problem — same solution.
My questions to the slashdot community are whether you've experienced similar problems and what are the criteria an operating system is IPv6 ready when two of the most popular systems fail on such simple tasks even when IPv6 is not used? How are ISP's expected to roll out IPv6 when such breakage occurs?