Re:Unicast Use of the Formerly Reserved 127/8
by mjevans on Tuesday November 16, 2021 @06:48PM
(#29247757)
Why can't they give me a proper /56 so I have at least 256 addresses to play with on the part that's intended to be used for prefix delegation? Even Comcast Business allocates a /56 but the stupid modems they require you to lease to use that service reserve 4 more bits of that so you only really get to operation on a /60.
CONSUMER gear should be getting at least /56 to the internal network, and Business grade should probably get at least /52. Which is almost what RIPE recommends (up to /48 for business customers, and /56 for normal users). https://www.ripe.net/publications/docs/ripe-690
Re:Unicast Use of the Formerly Reserved 127/8
by franga2000 on Wednesday November 17, 2021 @02:05AM
(#29249985)
/64 is actually pretty useless since you can't automatically allocate anything smaller than that. If I want to give each host on my net a bunch of addresses (maybe /72) I have to do that manually - DHCPv6/RA/whatever will straight up refuse to allocate anything smaller.
Also, most ISPs (probably not the phone carriers) when giving you IPv6 give you a /64, so you get 2^64 (18,446,744,073,709,551,616) addresses. Which if you're anti-corporation, gives you a lot more room to play with than a single IP that you'll need to NAT behind.