USG9560 Traffic is stopping for some devices and VM
1.Check the session entries of the abnormal VM host (10.128.64.107).
It is found that only one-way packet sending is available and no return data
packet is available.
2.The normal VM host (10.128.36.60) uses the route 197.159.xx.0/24 to
abnormal VM host (10.128.64.107) uses the unr route 197.159.xx.xx/32 to return packets. As a result, packet
3.When the nat-server command is run, the unr-route function is
enabled. As a result, the return packets cannot find the correct OSPF route for
packet return,Therefore, the VM server cannot access the Internet.
4. Find the server mapping option and check whether the nat server
policy is matched.
5.Deselect the configure black hole route option.
deselect the configure black hole route option，Use the d f s t v s I
197.159.xx.xx to check the firewall session is normal.
test the public ip 18.104.22.168 is normal.