'via ssh check VM internal connectivity:
- ping internal gateway and DHCP port, implying in-tenant connectivity
pinging both, because L3 and DHCP agents might be on different nodes'

def _check_network_internal_connectivity(self, network, should_connect=True):

    (floating_ip, server) = self.floating_ip_tuple
    internal_ips = (p['fixed_ips'][0]['ip_address'] for p in self.os_admin.ports_client.list_ports(tenant_id=server['tenant_id'], network_id=network['id'])['ports'] if p['device_owner'].startswith('network'))
    self._check_server_connectivity(floating_ip, internal_ips, should_connect)
