Re: [IPv6] communicating multiple link (status) to hosts

[Michael Richardson <[e-mail]>]

Ted Lemon <[e-mail]> wrote:
    > Hm. The way we generally handle this at the host level is to notice
    > icmp messages. On Apple devices if you use network framework it tracks
    > this stuff for you, at least for QUIC and TCP.

When doing HOMENET, we had this problem where devices which were not directly
connected to the primary infrastructure "LAN", where the two upstream CPEs
were, could not properly steer their traffic towards a specific CPE.

That was one of the major hurdles to doing two-provider, two-PA GUAs from a
host point of view.   I can see how ICMPs could tell you when the link has gone
down, but it's not clear to me that it helps for everything.

At this point I find myself muddled.

    > Unfortunately we don’t standardize APIs in the IETF these days…. :)

People repeat that rumour, but it's just not true.

--
Michael Richardson <[e-mail]>, Sandelman Software Works
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