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by zaphoyd
4396 days ago
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IPv6 mobile address portability attempts to keep your IPv6 address constant as you move around different wireless access points or LANs within a company or ISP network. It doesn't provide a globally static address or way to provide a static hostname. Even with a static or mostly static IPv6 address the ability to have a dual stack dynamic hostname where both the v4 (that changes a lot) and the v6 (which might change less) is still useful. It is also obviously useful as you roam between office and home and such and want to keep a hostname constant. |
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The route optimization mechanism means your packets can travel directly between the mobile node's care-of address and the other guy if they both support MIP, so no need to be even on the same continent.
Sadly MIP is mostly dead, though there seems to be a somewhat up to date (2013) Linux impl of Mobile IP v6 and NEMO for IPv4 here: http://umip.org/
My impression is that it was kind of overshadowed by IETF's efforts to make an architecturally pretty fix to the whole locator-vs-ID thing. This is the work leading to the LISP protocol. You can now find papers from Facebook, Cisco, etc advocating its deployment. Hopefully it will get popular at some point.