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Motivation (1)
Datagram protocols are in wide use
Internet Telephony Signaling (SIP)
Video streaming/conferencing
Online gaming
Network management (SNMP)
None of these can use TLS or IPsec
Lots of ad-hoc security/key-exchange protocols
(SIP/S-MIME, SNMPv3, … )
Why not IPsec?
PPT Version