I'm troubleshooting a strange network issue in our production environment.
The dumped pcap file comes from the full NAT mode LVS , and the toploy of the ip address in the dump file is:
172.19.132.90（client）-> 172.52.0.3, 172.16.246.46 -> 172.16.211.57(server)
The dumped file's snapshot: https://i.stack.imgur.com/vwiWY.jpg
I noticed the SRE value in the D-SACK is unbelievable BIG! Also the ack package isn't received by our client.(I also dump a file on 172.19.132.90 and cannot see the ACK)
My questions are Why the SRE is so big? Is that the reason the ACK failed to be received by the client?
