I have spawned a linux VM and it up and running on host. I had spawned it with keypair and added rules for ssh as well as icmp. But I ca’t access that VM through host using ssh:

# ssh -i mykeypair1.pem ubuntu@15.2103.200.135 
ssh: connect to host 15.2103.200.135 port 22: No route to host

# sudo ip netns exec qrouter-6d9ecf5d-2c89-437d-b92f-4bb41b33a091 ssh -i mykeypair1.pem ubuntu@15.2103.200.135
<Connection successful>

Any help? Thanks