Owen DeLong wrote:
Whether they do or not depends on your circumstance and the design of upstream networks. They may or may not. Certainly it is desirable from a customer perspective that they do not. It may be equally desirable from a carrier perspective that they do. Personally, I hope carriers will design their networks well enough that changing prefixes at random times is not necessary and customers can get a better IPv6 experience.
I won't say that it never changes, but generally it has not. Prefix is 2607:F780:1::/48 assign /60 prefix 1 entries in use, 4095 available, 0 rejected 0 entries cached, 1000 maximum User Prefix Interface 0001000110D1D32C001 2607:F780:1::/60 AT5/0.14250 I presume it will stay the same as long as cache works. Jack