| Watercasting:
marking data |
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| l | Server
watermarks and multicasts n |
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| versions of
each packet, where n ³ tree |
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| depth |
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| l | Routers drop
one packet version based |
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| on next hop’s
IP address |
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| l | Last-hop
router passes on only one |
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| packet version
based on receiver and |
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| router
identification key |
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