Comment by hagbard_c

Well, with such a description of the 'vices' of IPv6 vs the 'virtues' of IPv4 count me as one who considers himself in full support of the ivory towered greybeards who decided the 'net was meant to be more than a C&C network for sheeple. Once I got a /56 delegated by my IAP - which coincided with me digging down the last 60 metres of fibre conduit after which our farm finally got a real network connection instead of the wires-on-poles best-effort ADSL connection we had before that - I implemented IPv6 in nearly all - but not all - services. Not all of them, no, because IPv6 can make life harder than it needs to be. Internally some services still run IPv4 only and will probably remain doing so but everything which is meant to be reachable from outside can be reached through both IPv4 as well as IPv6. I recently started adding SIP services which might be the first instance of something which I'll end up going IPv6-only due to the problems caused by NATting the SIP control channels as well as the RTP media channels, something reminiscent of how FTP could make life difficult for those on the other side of firewalls and NAT routers. With IPv6 I do not need NAT so as long as the SIP clients support it I should be OK. Now that last bit, client support... yes, that might be a problem sometimes.