Hmm.. Do you have any examples of such ISPs? I’ve only seen them give out a /64 to the PPPoE / WAN interface and then also have a routable /56 or /48 which is almost always available using DHCPv6-PD. The /64 is only used for communication with the ISP (can also be a /126) while everything else if up to the router to manage.
Although I do get a /48 from my ISP there is nothing I can manage about the subnetting. The 16 bits between my prefix and my networks are assigned by my router using DHCPv6-PD and there is nothing I can do to set these bits. They are assigned to my networks sequentially.
I don't think it is feasible to use those bits with a special meaning.
Rob
Currently many routers (I’ve tested and written a tutorial on Ubiquiti, and OpenWRT) allow you to set the subnet you want. In addition to that, some ISPs have pages that have details on how to do this in FreeBSD, OpenBSD, Gentoo, Windows, Cisco, etc. Of course, the modem / router / switch / access point provided by the ISPs may not allow you this, but it’s certainly possible.
If anyone’s interested in my tutorial for UBNT devices, you can view it here:
https://blog.daknob.net/setting-up-edgemax-devices-for-ote-ipv6/ https://blog.daknob.net/setting-up-edgemax-devices-for-ote-ipv6/
Antonios
On 01 Oct 2016, at 18:04, Rob Janssen pe1chl@amsat.org wrote:
Although I do get a /48 from my ISP there is nothing I can manage about the subnetting. The 16 bits between my prefix and my networks are assigned by my router using DHCPv6-PD and there is nothing I can do to set these bits. They are assigned to my networks sequentially.
I don't think it is feasible to use those bits with a special meaning.
Rob
44Net mailing list 44Net@hamradio.ucsd.edu http://hamradio.ucsd.edu/mailman/listinfo/44net
El 01/10/16 a las 17:04, Rob Janssen escribió:
(Please trim inclusions from previous messages) _______________________________________________
Hmm.. Do you have any examples of such ISPs? I’ve only seen them give out a /64 to the PPPoE / WAN interface and then also have a routable /56 or /48 which is almost always available using DHCPv6-PD. The /64 is only used for communication with the ISP (can also be a /126) while everything else if up to the router to manage.
Although I do get a /48 from my ISP there is nothing I can manage about the subnetting. The 16 bits between my prefix and my networks are assigned by my router using DHCPv6-PD and there is nothing I can do to set these bits. They are assigned to my networks sequentially.
I don't think it is feasible to use those bits with a special meaning.
I think it's better to leave the use of the first 64 bits of the IPv6 free to the network admin, so he can distribute the bits between the /48 he gets from his ISP (for example) and the /64 subnets as he sees fit.
Given that we would always have a callsign encoded in the last 64 bits, I don't see why anyone would want to encode information about the country in the first 64 bits, especially since you can use compound callsigns such as PA/EA4GPZ if you're operating abroad.
Perhaps it would be interesting to have the information about the Maidenhead locator or GPS coordinates of a subnet (where this makes sense). Someone could use this info to make a geographical map of the network. However, I think that this info should belong to an external database (whois maybe) and not be encoded in the IPv6's.
73,
Dani.
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DaKnOb -
Dani EA4GPZ -
Rob Janssen