Actually, the session ID is not that far away :-)
If you look into SCTP, there is a verification tag that have the
characteristics of a session identifier. Also Multipath TCP has
similar functionality, it is called a token. SCTP is available, MPTCP
is under construction.
And both transport protocols are supporting multi-homing, i.e. the
endpoint can have several subflows to the remote endpoint over
different interfaces. If you make some changes to the routing
architecture you could ensure that the subflows are routed over
different attachment points between the local network and Internet -
multi-homing service is no longer provided by the network, the
endpoints take cares of that themselves. And the routing architecture
becomes simpler, also endpoint mobility is an extra bonus.
-- patte
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