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jamespharaoh | 4 years ago

Do ISPs really give out /128s? That's, erm, that's monstruous! Mine gives a /60 but their router doesn't have any way to use it, which is a bit shit. Still, 10 gigs symmetric...

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jagger27|4 years ago

Rogers in Canada gives out a /64 by default, and a /56 if you send a hint.

Bell, on the other hand, gives a big fat /nothing and doesn't support IPv6. I don't understand how they can roll out 1.5Gbit FTTH but refuse to support IPv6. Their mobile network uses it, of course, so it's truly perplexing.

throw0101a|4 years ago

> Bell, on the other hand, gives a big fat /nothing and doesn't support IPv6.

Meanwhile Teksavvy, who piggybacks over Bell's copper and is also using PPPoE for DSL 'logins', has been giving out IPv6 for a couple of years now.

sidewndr46|4 years ago

Spectrum here in Austin TX assigns me a /128

ArchOversight|4 years ago

If you request a prefix delegation using DHCPv6 you will get up to a /56 which you can subnet.

8 bits of subnetting means you can create up to 256 different subnets.

wmf|4 years ago

Your router may be doing something wrong because DHCPv6-PD worked fine for me on Spectrum Austin.

willis936|4 years ago

My two data points:

- Spectrum gave me /64.

- Comcast gives me /128.

ArchOversight|4 years ago

Spectrum and Comcast both will happily hand out prefix delegations that are larger than the /64.

Comcast for example right now is giving me a /128 for my router, and a /60 which I have used to set up multiple VLAN's.

Spectrum will give you a /56 in a prefix delegation, and a /128 for the router.

Dagger2|4 years ago

Comcast uses /64 for the WAN network and will give you up to a /60 routed prefix for LAN-side networks.

pilif|4 years ago

Which means the /64 is not usable if you want to do subnetting and use SLAAC and the /128 is not useable at all if you have more than one machine.

No such issues with v4.

That was my point about subnetting.