Internet Protocol, version 6 There are numerous known problems with [IPv4], and [IPv6] is an attempt to fix several of them. The most pressing problem it addresses is the shortage of address space: because of the way that IPv4 addresses are allocated, there are not enough! IPv6 increases the length of an address from 32 bits (v4) to 128 bits. Since every extra bit doubles the number of addresses, that should last us a while ;-) Because IPv6 addresses are longer, they look different. The various formats are described on the [IPAddress here]. BTW, IPv5 was never deployed. IPv6 enabled melb-wireless peoples: %%% * BrendanHiley (ProFX) - Using 3ffe:b80:c32::/48 - http://www.ipv6.ProFX.net * JT * TysonClugg * TonyLangdon (vk3jed, or often vk3jed-ipv6 these days ;) ). * [RogerVenning] - see AAAA record for 55aWilliamSt.dnsq.org although network is currently in a state of flux.