Answer by michal-gershenzon for Hello, I try to Install OpenStack Juno (Ubuntu Server 64 Bit - 14.04 LTS). I followed the Instructions, and verified all previous steps. Now I am at Chapter 6. Now I try to "Verify the Connectivity". I should be able to ping the tenant router gateway from any other node including my Host PC. But I can't even ping the router gateway from the contoller or network node. I try to fix this problem since ... :-( By the way.: I am able to ping the tenant router gateway from the network node with the following workaround: ip netns exec qrouter-08dd4213-ce5a-4929-9a0b-1ff9035e1b1c ping 192.168.100.101 Here is my configuration... Hope somebody can help me... BASIC Configuration: -------------------------------------------------------------------------- Settings on my local PC - HOST System: -------------------------------------- Windows 8 Norton InternetSecurity IPv4: 192.168.178.38 Standardgateway: 192.168.178.1 V-Box - Global Settings: ------------------------ VirtualBox Host-Only Ethernet Adapter #2: 10.10.10.1 VirtualBox Host-Only Ethernet Adapter #3: 10.20.20.1 VirtualBox Host-Only Ethernet Adapter #4: 192.168.100.1 Compute-Node-V-Box-Settings: ---------------------------- Adapter 1: Paravirtualized Network - Promiscuous Mode: allow all (VirtualBox Host-Only Ethernet Adapter #2) Adapter 2: Paravirtualized Network - Promiscuous Mode: allow all (VirtualBox Host-Only Ethernet Adapter #3) Adapter 3: Paravirtualized Network - Promiscuous Mode: allow all (NAT) Controller-Node-V-Box-Settings: ------------------------------ Adapter 1: Paravirtualized Network - Promiscuous Mode: allow all (VirtualBox Host-Only Ethernet Adapter #2) Adapter 2: Paravirtualized Network - Promiscuous Mode: allow all (NAT) Network-Node-V-Box-Settings: ------------------------------ Adapter 1: Paravirtualized Network - Promiscuous Mode: allow all (VirtualBox Host-Only Ethernet Adapter #2) Adapter 2: Paravirtualized Network - Promiscuous Mode: allow all (VirtualBox Host-Only Ethernet Adapter #3) Adapter 3: Paravirtualized Network - Promiscuous Mode: allow all (VirtualBox Host-Only Ethernet Adapter #4) Adapter 4: Paravirtualized Network - Promiscuous Mode: allow all (NAT) -------------------------------------------------------------------------- Controller-NODE: File: /etc/network/Interfaces -------------------------------------------------------------------------- # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet static address 10.10.10.10 netmask 255.255.255.0 auto eth1 iface eth1 inet dhcp -------------------------------------------------------------------------- Compute-NODE: File: /etc/network/Interfaces -------------------------------------------------------------------------- # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet static address 10.10.10.11 netmask 255.255.255.0 auto eth1 iface eth1 inet static address 10.20.20.11 netmask 255.255.255.0 auto eth2 -------------------------------------------------------------------------- NETWORK-NODE: File: /etc/network/Interfaces -------------------------------------------------------------------------- # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet static address 10.10.10.12 netmask 255.255.255.0 auto eth1 iface eth1 inet static address 10.20.20.12 netmask 255.255.255.0 auto eth2 iface eth2 inet manual up ifconfig $IFACE 0.0.0.0 up up ip link ... (more)

I think it might help if you use traceroute instead of ping, that will give you more information about the connection (to install on ubuntu: sudo apt-get install traceroute). And in addition you can look at the route table (route -n), maybe you just need to add a static route.