Cannot ssh or ping my cirros instance

asked 2018-08-28 16:04:07 -0500

I have one network card enp0s3 with ip 192.168.43.90 and its connected to internet. I have successfully launched a cirros instance on OpenStack-queens with floating ip 192.168.43.102 and its gateway is 192.168.43.101. My instance private network ip is 172.0.0.105. I have set the security rules for icmp as well as ssh(ingress and egress as well). I can ping or ssh to the instance using ip netns exec command but i am not able to ssh or ping to my instance from public network. I have tried all possible solutions on this issue but i am not able to figure out problem with my system

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