Hi Team, I have been struggling to get the solution. I'm testing openstack and deploying it over virtualbox. I have shared my issue in SO with help from berndbausch https://stackoverflow.com/users/3548109/berndbausch and try to share it here also to get more help....as I have create and redeploy few times with different openstack release.. deployment methods..parameters....still the same problem. I don't think my deployment is different with others as i follow the guideline and common practise... just stuck on this problem...please do help and assist me further. Thank you to all....

Below is my environment setup.

Windos10_Virtualbox----Centos7------Openstack----VM instance [192.168.0.0/24] - external network/public-ip Pc host - 192.168.0.160 Home Lan GW - 192.168.0.1 Centos7 - 192.168.0.12 (VM virtualbox) Openstack Router GW - 192.168.0.221 Virtualbox VM setting bridge (enp0s3) and promiscuous mode all selinux permissive

add rules icmp and ssh. create public-ip 192.168.0.0/24 (pool 220-230) create router create private subnet 10.0.0.0/24 attach router to private subnet create router GW(public-ip)

From LAN I can ping and ssh vm instance but from vm instance i cannot ping

to home Lan GW, pc host. VM instance can ping up to centos7 virtualbox and openstack Router GW. Instance created with centos and cirros using direct public-ip and also floating ip. Some instance created with direct public ip and some with private subnet and using floating ip.

I have tested with queens, stein, train. With allinone and also using answerfile and all end up I cannot ping external. I follows guideline below:-

*hxxps://www.linuxtechi.com/single-node-openstack-liberty-installation-centos-7/ http://www.linuxtechi.com/single-node-openstack-liberty-installation-centos-7/* *hxxps://www.rdoproject.org/install/packstack/ http://www.rdoproject.org/install/packstack/*

This some of answer file parameters that i edited

CONFIG_NEUTRON_L3_EXT_BRIDGE=br-ex CONFIG_NEUTRON_ML2_TYPE_DRIVERS=flat,vxlan CONFIG_NEUTRON_OVS_BRIDGE_MAPPINGS=extnet:br-ex CONFIG_NEUTRON_OVS_BRIDGE_IFACES=br-ex:enp0s3 CONFIG_NEUTRON_OVS_BRIDGES_COMPUTE=br-ex CONFIG_PROVISION_DEMO=n

ip netns list qrouter-f6967bba-986e-4bb3-838e-d035a684e2c4 (id: 2) qdhcp-dbd713cd-1af4-4e2c-9c57-d8a675a10608 (id: 1) qdhcp-fa6fb1d6-b65e-4eb2-a4a4-5552fde8bb08 (id: 0) [root@myospackanswer ~(keystone_admin)]# ip netns exec qrouter-f6967bba-986e-4bb3-838e-d035a684e2c4 arp -an ? (192.168.0.211) at <incomplete> on qg-0ba7da31-7f ? (192.168.0.227) at fa:16:3e:ed:19:81 [ether] on qg-0ba7da31-7f (Instance IP) ? (192.168.0.160) at d4:d2:52:73:de:80 [ether] on qg-0ba7da31-7f (host pc IP) ? (192.168.0.1) at 80:26:89:b2:98:50 [ether] on qg-0ba7da31-7f (home router GW) ? (10.0.0.4) at fa:16:3e:01:63:42 [ether] on qr-7e6f9436-40 (private subnet)

ip r default via 192.168.0.1 dev br-ex169.254.0.0/16 dev enp0s3 scope link metric 1002169.254.0.0/16 dev br-ex scope link metric 1006192.168.0.0/24 dev br-ex proto kernel scope link src 192.168.0.121

qrouter-f6967bba-986e-4bb3-838e-d035a684e2c4 (id: 2) qdhcp-dbd713cd-1af4-4e2c-9c57-d8a675a10608 (id: 1) qdhcp-fa6fb1d6-b65e-4eb2-a4a4-5552fde8bb08 (id: 0)

sudo ip netns exec qrouter-f6967bba-986e-4bb3-838e-d035a684e2c4 ip route default via 192.168.0.1 dev qg-0ba7da31-7f10.0.0.0/24 dev qr-7e6f9436-40 proto kernel scope link src 10.0.0.1192.168.0.0/24 dev qg-0ba7da31-7f proto kernel scope link src 192.168.0.221

ip addr

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master ovs-system state UP group default qlen 1000 link/ether 08:00:27:98:9b:a3 brd ff:ff:ff:ff:ff:ff inet6 fe80::a00:27ff:fe98:9ba3/64 scope link valid_lft forever preferred_lft forever 5: ovs-system: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 8a:17:8b:e5:dc:c2 brd ff:ff:ff:ff:ff:ff 6: br-ex: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default qlen 1000 link/ether 08:00:27:98:9b:a3 brd ff:ff:ff:ff:ff:ff inet 192.168.0.121/24 brd 192.168.0.255 scope global br-ex valid_lft forever preferred_lft forever inet6 2001:e68:5435:d135:a00:27ff:fe98:9ba3/64 scope global mngtmpaddr dynamic valid_lft 86399sec preferred_lft 86399sec inet6 fe80::a00:27ff:fe98:9ba3/64 scope link valid_lft forever preferred_lft forever 7: br-int: <BROADCAST,MULTICAST> mtu 1450 qdisc noop state DOWN group default qlen 1000 link/ether 32:ff:0f:26:18:43 brd ff:ff:ff:ff:ff:ff 8: br-tun: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether d6:52:08:a9:68:4f brd ff:ff:ff:ff:ff:ff 29: qbr1f637f14-9c: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1450 qdisc noqueue state UP group default qlen 1000 link/ether 42:95:e8:c0:a3:07 brd ff:ff:ff:ff:ff:ff 30: qvo1f637f14-9c@qvb1f637f14-9c: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1450 qdisc noqueue master ovs-system state UP group default qlen 1000 link/ether 6e:2e:07:8d:79:86 brd ff:ff:ff:ff:ff:ff inet6 fe80::6c2e:7ff:fe8d:7986/64 scope link valid_lft forever preferred_lft forever 31: qvb1f637f14-9c@qvo1f637f14-9c: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1450 qdisc noqueue master qbr1f637f14-9c state UP group default qlen 1000 link/ether 42:95:e8:c0:a3:07 brd ff:ff:ff:ff:ff:ff inet6 fe80::4095:e8ff:fec0:a307/64 scope link valid_lft forever preferred_lft forever 32: tap1f637f14-9c: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1450 qdisc pfifo_fast master qbr1f637f14-9c state UNKNOWN group default qlen 1000 link/ether fe:16:3e:05:2d:50 brd ff:ff:ff:ff:ff:ff inet6 fe80::fc16:3eff:fe05:2d50/64 scope link valid_lft forever preferred_lft forever