On 01 Sep 2001 10:38:28 -0700, Tuan Duc Tran wrote: > Could any one please tell me what is Ipv6? I have heard that Ipv6 use > 128 bits. Does it mean if we take 128/8 we have 16 bytes addressing? If > not, does Ipv6 is 6 bytes address instead of 4 bytes which we are using > right now? And, how do we setup Ipv6 on Linux or windows? Is it a must > use or we can stay with Ipv4? > Thank you IPv6 Does indeed use 128-bit addresses, as opposed to IPv4's 32-bit address. If I remember correctly, the additional address space is pre-pended to the left end of the address, in 8-byte chunks (just like the current IPv4 uses 4 8-byte chunks, IPv6 just adds a few more octets). A system running IPv6 is backwards-compatible with IPv4, because it can recognize the shorter network address of IPv4, and thus resolve the address correctly. However, IPv4 systems can not understand IPv6 addresses. All Linux distros set themselves up with IPv4 by default, since IPv6 is still far from universal. I don't know how to set up IPv6, but I would imagine there is a howto available. In fact, a search at google.com turned up a whole bunch of links, including these: http://www.bieringer.de/linux/IPv6/IPv6-HOWTO/IPv6-HOWTO.html http://www.linuxhq.com/IPv6/ Enjoy, Dave
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