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Proposed Solutions
New Via header field parameter
via-connection = “soft-persistent”
via-connection = “hard-persistent”

No timer negotiation
Somewhat mimics connect-reuse I-D solution
Supports hint/forced request notion

New header, Supported/Require
Supported: persistence
Require: persistence
Persistent-Timeout: 36000

Timer negotiation
Supports hint/forced request notion

PPT Version