Seems like instead of random suffix you could just use prefix+mac hashed with a secret.
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But it's actually useful that machines use a consistent suffix across all prefixes. I know ...:7ec4 is my router whether ULA or global
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Replying to @erincandescent @oshepherd and
Yes. I see the value in 2 addresses, one predictable and one not. Don't see the value in randomizing & cycling the latter.
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Because otherwise you have a unique 64-bit ID which follows your machine around across networks
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Replying to @erincandescent @oshepherd and
No, my proposal was hash(prefix+mac+secret). Without knowing secret you can't track across networks (differing prefixes).
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but then you have different suffixes across different concurrently active prefixes
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Replying to @erincandescent @oshepherd and
Why is that a problem? If anything it seems like an advantage for privacy.
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🎃 unsafe { mem::transmute(@erincandescent) } 🎃 Retweeted 🎃 unsafe { mem::transmute(@erincandescent) } 🎃
Because we loop back tohttps://twitter.com/oshepherd/status/913483640063094784 …
🎃 unsafe { mem::transmute(@erincandescent) } 🎃 added,
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Replying to @erincandescent @oshepherd and
Which a third party can also see if you connect to resources they control via more than one interface (e.g. VPN and non-VPN)...
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Normally VPN services would manage your assigned IP themselves
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A properly-behaving IPv6 VPN would just allow the normal IPv6 auto-selection of address, no?
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This depends upon the working model of your VPN. VPNs are also (for maximizing privacy) one of the cases where IPv6 NAT may make sense
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