[Mobike] New issue 17: Full connectivity

[Francis Dupont]

 In your previous mail you wrote:

   Yes, I certainly agree that we should not assume this. I brought this 
   up because at some point, Francis was suggesting that each end 
   should be responsible for only changing its own address 
   (e.g. 2004-07-29), but probably I misunderstood him here.
   
=> perhaps a SHOULD is a bit too strong here, IMHO this is only the
common/likely case. There is a known exception: when the addresses
are paired, it is better to change both addresses.
I have two arguments in favor of my opinion:
 - a node has a better control on the condition of its own addresses
 - when an address becomes unusable, the only critical thing is to
   change the local address of *inbound* SAs.

Thanks

Francis.Dupont at enst-bretagne.fr