Hello all.

In short: after days of unsuccessful attempts, I am failing to reach my VM with its Floating IP, and the VM is failing to reach outside world...

First, I apologize: I'm new to OpenStack, and my "mission" is to evaluate what needs to be done to go from a "classic" existing application to the NFV (Network Functional virtualization) world. So, I started to read a lot about NFV, and ended up to OpenStack world - this explains why I am here, and why many Openstack notions are new and somehow "immature" in my mind...

To understand better this new (for me) world, I decided to install Devstack on an Ubuntu 16.04.4 VM provided to me by my organization through ESX Vmware.

The VM (named nfv01) was assigned on network interface ens162 the 10.26.106.68 static IP address. I also asked for a second network interface (ens160) I was expecting OpenStack to use for its private networking stuff. The initial ifconfig result is the following (skipping "lo" interface):

ens160    Link encap:Ethernet  HWaddr 00:0c:29:aa:e4:3a
          inet addr:192.168.0.1  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:29ff:feaa:e43a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:20050 errors:0 dropped:29 overruns:0 frame:0
          TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1445845 (1.4 MB)  TX bytes:648 (648.0 B)

ens192    Link encap:Ethernet  HWaddr 00:0c:29:aa:e4:30
          inet addr:10.26.106.68  Bcast:10.26.107.255  Mask:255.255.254.0
          inet6 addr: fe80::20c:29ff:feaa:e430/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:25468 errors:0 dropped:38 overruns:0 frame:0
          TX packets:2876 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:7470992 (7.4 MB)  TX bytes:221641 (221.6 KB)

I was also dedicated by my organization the 10.26.106.187...191 IP addresses to be used as Floating IPs.

For DevStack installation, I configured the following lines in the local.conf file used by stack.sh script:

HOST_IP=10.26.106.68

FLAT_INTERFACE=ens160
FIXED_RANGE=192.168.0.1/24

PUBLIC_INTERFACE=ens192
FLOATING_RANGE=10.26.106.68/23
PUBLIC_NETWORK_GATEWAY=10.26.106.1
Q_FLOATING_ALLOCATION_POOL=start=10.26.106.187,end=10.26.106.191

Devstack works: I am able to create instances, and to allocate floating IPs to instance. After security group update, I'm able to ping and SSH my VM from nfv01 server, and my VM can ping and SSH nfv01 and is also able to ping the gateway (10.26.106.1). But my VM is NOT able to reach the rest of my network (10.26.106.100, for example), nor the external world (8.8.8.8), while nfv01 can do all these things ... (more)