-client ACK 655 12.23.34.45 123 0
- | | | +-> options
- | | +----> estimated weight
- | +------------> IP address of server as seen by client
- +--------------------> UDP port of client
-
-server ACK 655 21.32.43.54 321 0
- | | | +-> options
- | | +----> estimated weight
- | +------------> IP address of client as seen by server
- +--------------------> UDP port of server
+client ACK 655 123 0
+ | | +-> options
+ | +----> estimated weight
+ +--------> listening port of client
+
+server ACK 655 321 0
+ | | +-> options
+ | +----> estimated weight
+ +--------> listening port of server