Okay, so this is *really* stupid. On NTT FLET's, if you don't have a Hikari Denwa contract, you only get a /64 prefix assigned via IPv6 RA. If you do, you get a /56 via DHCPv6-PD. The /56 I just got? It's *the same as my old /64*. They are allocating a /56 for everyone anyway
Given that this is Japan and NTT, it's way less likely that this is profit-driven and exceedingly more likely that it's just something completely dumb, like, say, that their VoIP routers can't pass through a /64 cleanly or that they decided to implement this for that service.
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Like, there's probably 5 of us signing up for VoIP just to get a /56. They aren't making a fortune off of this policy.
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That might explain why there isn't just an arbitrary fee for a /56 without VoIP though. Correct me if I'm wrong here (and I'm sure you will :P) but can't VoIP just be run over normal internet like any other protocol? Does it need special handling?
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NTT are listed on the stock market though & allegedly therefore have a duty to increase shareholder's profits. Is having a special subscription for VoIP not just some arbitary restriction they can get people to pay for?
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