Win10 and WinServer 2016 VMs in vmbr0?

[zinogr3]

How to let 2 VMs (Windows 10 and Server 2016) talk to each other? They cannot ping to each other. No DHCP. All static IP Address. Same Gateway and subnet.

Proxmox Server

cat /etc/network/interfaces

auto vmbr0
iface vmbr0 inet static
        address 192.168.1.99/24
        gateway 192.168.1.1
        bridge-ports enp60s0
        bridge-stp off
        bridge-fd 0

Web GUI. System > Network

Name	Type	Active	Autostart	VLAN	Ports/Slaves	Bond Mode	CIDR	Gateway
vmbr0	Linux Bridge	Yes	Yes	No	enp60s0		192.168.1.99/24	192.168.1.1

In both VMs, Network Device (net0) =
Network Bridge: vmbr0
Model: VirtlO (paravirtualized)
VLAN Tag: no VLAN
Firewall: Ticked

Win10's Ethernet Network's IPV4 =
IP Address 192.168.1.151
Subnet Mask 255.255.255.0
Default Gateway 192.168.1.1
Preferred DNS Server 192.168.1.151
Alternative DNS Server 192.168.1.1

Win Server 2016's IPV4 (mostly same as Win10, except) =
IP Address & Preferred DNS Server 192.168.1.152