TWSD-196 We observing Private IP on WAN link of LLB for outbound traffic |AS-13270|SaraswatBank

Review Request #881 — Created May 22, 2025 and submitted — Latest diff uploaded

Information
mingji
APV10
rel_apv_10_7
TWSD-196
Reviewers
kevin.poh, timlai, weikai 
LLB will forward packet on WAN with private IP after the session is closed(pcb is deleted).

When APV recieveing a packet but the pcb is not existed, APV won't check NAT table to do proper IP translation.


Solution:

In click_route_packet(), if there is a NAT entry match the packet's tuple, rewrite source IP address in mbuf.
    

  1. establish a TCP connection
    2. 

  2. close the socket
    3. 

  3. client sends RST to server
    4.
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