Enfrentando problemas de rede de nêutrons em openstack (implantados através do openstack conjure-up com kvm)

Question

Estou enfrentando problemas de rede no Openstack. Minha instalação openstack (MaaS + JuJu + Conjure-up) foi implementada com sucesso, mas quando eu giro uma instância, não há conectividade com a Internet e meu roteador também não está recebendo ping da rede externa ( My Openstack VM pode pingar o roteador ).

Qualquer pista seria realmente útil.

Traceroute o / p:

$sudo ip netns exec qrouter-ce0ba09f-8220-4414-91e2-b6896b596aef traceroute 8.8.8.8  
traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets  
1  172.18.0.111 (172.18.0.111)  2999.458 ms !H  2999.416 ms !H  2999.409 ms !H

iptables o / p do roteador:

Regras NAT iptables do roteador

$ sudo ip netns exec qrouter-ce0ba09f-8220-4414-91e2-b6896b596aef iptables -t nat -L

Chain PREROUTING (policy ACCEPT)
target     prot opt source               destination
neutron-l3-agent-PREROUTING  all  --  anywhere             anywhere

Chain INPUT (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination
neutron-l3-agent-OUTPUT  all  --  anywhere             anywhere

Chain POSTROUTING (policy ACCEPT)
target     prot opt source               destination
neutron-l3-agent-POSTROUTING  all  --  anywhere             anywhere
neutron-postrouting-bottom  all  --  anywhere             anywhere

Chain neutron-l3-agent-OUTPUT (1 references)
target     prot opt source               destination
DNAT       all  --  anywhere             172.18.0.108         to:10.0.0.4

Chain neutron-l3-agent-POSTROUTING (1 references)
target     prot opt source               destination
ACCEPT     all  --  anywhere             anywhere             ! ctstate DNAT

Chain neutron-l3-agent-PREROUTING (1 references)
target     prot opt source               destination
REDIRECT   tcp  --  anywhere             169.254.169.254      tcp dpt:http redir ports 9697
DNAT       all  --  anywhere             172.18.0.108         to:10.0.0.4

Chain neutron-l3-agent-float-snat (1 references)
target     prot opt source               destination
SNAT       all  --  10.0.0.4             anywhere             to:172.18.0.108

Chain neutron-l3-agent-snat (1 references)
target     prot opt source               destination
neutron-l3-agent-float-snat  all  --  anywhere             anywhere
SNAT       all  --  anywhere             anywhere             to:172.18.0.111
SNAT       all  --  anywhere             anywhere             mark match ! 0x2/0xffff ctstate DNAT to:172.18.0.111

Chain neutron-postrouting-bottom (1 references)
target     prot opt source               destination
neutron-l3-agent-snat  all  --  anywhere             anywhere             /* Perform source NAT on outgoing traffic. */