IPv6#split

[mcr]

Is there any reason why the various subnetting, supernet, split() functions are IPv4 only?
Is it just missing a v6 implementation, or is there something else deeper that makes it hard?

[msimkins]

The concept is different in IPv6, that is not to say that there is no use for them. Bearing in mind that the smallest common Address size is a /64, so you should not split that into smaller bits.

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On 8 Jan 2019, at 23:19, Michael Richardson ***@***.***> wrote: Is there any reason why the various subnetting, supernet, split() functions are IPv4 only? Is it just missing a v6 implementation, or is there something else deeper that makes it hard? — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or mute the thread.

[mcr]

Mike Simkins <[email protected]> wrote: The concept is different in IPv6, that is not to say that there is no use for them. If I have a RIR assigned /32, creating subnets of /48s and /56s to hand out to customers/networks is pretty much the same as in IPv4. Bearing in mind that the smallest common Address size is a /64, so you should not split that into smaller bits. Yes, I'm pretty much in the middle of the ongoing/continuous IETF 6man debate on that :-)

[Adam21e]

If you are interested in IPv6 functionality I have forked this into a new repo and gem:
https://github.com/ipaddress2-gem/ipaddress_2

It just copies the IPv4 functions to the IPv6 library.

[mcr]

Thank you, I will look at it. I did the split work as well, it's at: https://github.com/AnimaGUS-minerva/fountain/blob/master/app/models/acp_address.rb I put it into my subclass of IPaddress::IPv6, which does other specific allocation work. I'll see if I can use your code. In the end, I found working with IPaddress a bit obtuse as it does not keep the IPv6 in a binary format. I find my code going to/from binary and "native" hex string representation a lot just so that it can toggle bits here and there. It just seemed wrong. BTW: acp_address implements one of the address modes of draft-ietf-anima-autonomic-control-plane.

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-- ] Never tell me the odds! | ipv6 mesh networks [ ] Michael Richardson, Sandelman Software Works | network architect [ ] [email protected] http://www.sandelman.ca/ | ruby on rails [