redirect based on client address stop at handshake

Hi all, when we implement the below irule on a VIP which is working, we notice the source client send a RST packet once the handshake is completed. From the tcpdump it shows the below.

1. Source　⇒　F5　SYN
2. F5　⇒　Source　SYN、ACK
3. Source　⇒　F5　ACK
4. Source　⇒　F5　PSH、ACK
5. F5　⇒　Source　ACK
6. F5　⇒　Source　PSH、ACK
7. Source　⇒　F5　ACK

8. Source　⇒　F5　RST、ACK

    

   when CLIENT_ACCEPTED { if { [IP::addr [IP::client_addr] equals 210.xxx.xxx.xx] } { pool Pool_GroupB } }