Openstack VLAN provider Network

Question

I have deployed an OpenStack Victoria using packstack in a Centos 8 Stream machine.

I have 3 NIC interfaces that are configured in the following way

eno1 -> VLAN 684 10.15.0.0/16 
eno2 -> local network 192.168.235.0/24
eno3 -> local network 192.168.15.0/24

VLAN and local networks are working fine outside Openstack.

I have deployed Openstack using packstack and local networks work fine and I can deploy instances inside openstack that get floating ips from those ranges without problem and I can ping to them.

The problem is with VLAN network, I can deploy instances and I get floating ips from VLAN network range but I can't ping them.

My packstack answer file is https://pastebin.com/GEqspMWu

I have created VLAN network using following commands:

neutron net-create vlan_network --provider:network_type vlan --provider:physical_network vlan  --router:external=True --shared --provider:segmentation_id=684

neutron subnet-create --name vlan_subnet --enable_dhcp=False --allocation-pool=start=10.15.11.103,end=10.15.11.113 --gateway=10.15.11.1 vlan_network 10.15.11.0/24

Any ideas?