Comment by cyberax
2 days ago
It does have the effect of requiring you to follow the upstream ISP's numbering system. So if they switch the prefix, you have to follow.
And it's more of the "it's the thought that counts" thing. Multihoming was considered to be something rather exotic and mostly a requirement for ISPs or large companies.
Yes, but that rarely happens with IPv6. ISP / LIRs get huge allocations.
The real problem is BGP isn't available from most home or "small business" internet connections. You can't multihome even if you want to. You need a DIA / enterprise plan, or you need to use tunneling (which is what I do, from several BGP capable VPSes, in a configuration that is too complex for the typical SMB.)