Re: sockets APIs extensions for Host Identity Protocol

[der Mouse <[e-mail]>]

> have to agree - simply making the length field bigger would break
> compatibility for binary object files.

Yeah; as I mentioned, you just need to version the calls.

> however, you might probably move the location of the length field,
> leave sa_family where it is, put a "must be zero" field in its place,

I really dislike that idea.  sockaddr_in effectively has a "must be
zero" field now, under at least some OSes, and I think it is a horrible
botch.  Doing this would also render existing working source broken by
fiat (because it doesn't zero this new field), which strikes me as a
very bad idea.

Unless you mean, do this only for AF_HIT or whatever the new AF_ is, in
which case only the MBZ comment applies - which I think is *also* a bad
idea, because it means that sockaddr_hit cannot be punned with sockaddr
or soackaddr_storage the way all other sockaddr_*s can be.

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