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RSVP daemon supports IPv6 flow labels
without any modifications to standard ISI RAPI. Sender must allocate
flow label, fill corresponding sender template and submit it to local rsvp
daemon. rsvpd will check the label and start to announce it in PATH
messages. Rsvpd on sender node will renew the flow label, so that it will not
be reused before path state expires and all the intermediate
routers and receiver purge flow state.
rtap utility is modified to parse flow labels. F.e. if user allocated
0xA1234, he may write:
RTAP> sender 3ffe:2400::1/FL0xA1234 <Tspec>
Receiver makes reservation with command:
RTAP> reserve ff 3ffe:2400::1/FL0xA1234 <Flowspec>