Dean Willis writes:

 > Assume a UA has two different interfaces, and it registers each of its  
 > interfaces with a different proxy/registrar. Further assume that those  
 > two proxy registrars collude with respect to mapping the user's AUR  
 > onto those contacts.

that "collude" thing is exactly what i tried to avoid.  if ua is
required to register all of its contacts via both proxies, then
redundancy of the service can be implemented by running the
two proxy/registrars completely independent of each other thus greatly
simplifying the implementation.

if that requirement is not there, ob becomes totally useless again and
there was no advantage that the text was changed according to my
wishes.  you may as well go and change it back to what it was before.

 > What's not redundant about this, and why is it useless?

see above.  if we assume that ob set share common knowledge of the
registrations (e.g. via database), then registering via only some of the
ob proxies works fine.

-- juha
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