In message <CAPkb-7AMjiVPqTSmTvk7Wa0NW3WysOPhxPyEGhTJ+8O54=u...@mail.gmail.com>, Baldur Norddahl writes: > On 13 June 2016 at 02:05, Owen DeLong <o...@delong.com> wrote: > > > 2. Consistent and easier comparisons for equality or ranges > > In iPv4, this was useful. In IPv6, it=E2=80=99s essential= > . > > > > > You could also normalize your IPv6 text representation. There is even RFC > 5952 for that. Abbreviated the rule is: > > 1) lower case > 2) as short as possible, except do not shorten just one :0: into ::. > 3) if there is more than one possible :: block that results in the same > shortest length, choose the first block as ::. > > I am not quite sure why they put in the exception not to shorten one zero, > but otherwise this is what most people would naturally come up with.
Those rules are good for equality but not much more. > Also, technically there is more than one IPv4 representation too. I have in > the past poked security holes through this as most people forget (or don't > know): As Owen mentioned. > Baldurs-MacBook-Pro-2:~ baldur$ ping -c1 100000000 > PING 100000000 (5.245.225.0): 56 data bytes > > Regards, > > Baldur -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org