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Instance cannot ping outside although compute node mgmt is pingable

HI I am using FlatDHCPManager to assign private IPs to VMs. I have a 10.0.0.0/24 private network created for that.

I also have a public floating ip pool and VMs are pingable from outside using floating ip address.

I can also ping from inside the instance, compute node/controller mgmt ip as below, but I cannot ping the gateway ip for this subnet.

I don't know why I cannot access internet from instance when instance is accessible from outside.

[centos@dgdfdd ~]$ ping 192.168.55.214 PING 192.168.55.214 (192.168.55.214) 56(84) bytes of data. 64 bytes from 192.168.55.214: icmp_seq=1 ttl=64 time=0.285 ms 64 bytes from 192.168.55.214: icmp_seq=2 ttl=64 time=0.260 ms ^C --- 192.168.55.214 ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1000ms rtt min/avg/max/mdev = 0.260/0.272/0.285/0.020 ms [centos@dgdfdd ~]$ ping 192.168.55.254 PING 192.168.55.254 (192.168.55.254) 56(84) bytes of data. ^C --- 192.168.55.254 ping statistics --- 2 packets transmitted, 0 received, 100% packet loss, time 999ms

[centos@dgdfdd ~]$

Instance cannot ping outside although compute node mgmt is pingable

HI I am using FlatDHCPManager to assign private IPs to VMs. I have a 10.0.0.0/24 private network created for that.

I also have a public floating ip pool and VMs are pingable from outside using floating ip address.

I can also ping from inside the instance, compute node/controller mgmt ip as below, but I cannot ping the gateway ip for this subnet.

I don't know why I cannot access internet from instance when instance is accessible from outside.

[centos@dgdfdd ~]$ ping 192.168.55.214
PING 192.168.55.214 (192.168.55.214) 56(84) bytes of data.
64 bytes from 192.168.55.214: icmp_seq=1 ttl=64 time=0.285 ms
64 bytes from 192.168.55.214: icmp_seq=2 ttl=64 time=0.260 ms
^C
--- 192.168.55.214 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1000ms
rtt min/avg/max/mdev = 0.260/0.272/0.285/0.020 ms
[centos@dgdfdd ~]$ ping 192.168.55.254
PING 192.168.55.254 (192.168.55.254) 56(84) bytes of data.
^C
--- 192.168.55.254 ping statistics ---
2 packets transmitted, 0 received, 100% packet loss, time 999ms

999ms

[centos@dgdfdd ~]$