## Bug Report: Duplicate MAC Addresses on TAP Interfaces Causing Network Conflicts

[fumufu86]

Describe the bug

A clear and concise description of what the bug is.
Description
When using TAP interfaces, there is a recurring issue where MAC addresses are generated identically for multiple interfaces. This results in network conflicts and connectivity problems, particularly in environments with a large number of virtual devices.

Steps to Reproduce

1. Create multiple TAP interfaces in a network environment using [software/tool/method].
2. Observe the MAC addresses assigned to each TAP interface.
3. Note that some or all interfaces receive identical MAC addresses.

Expected Behavior
Each TAP interface should receive a unique MAC address to ensure proper network operations and avoid conflicts.

Actual Behavior
Duplicate MAC addresses are assigned to different TAP interfaces, causing network conflicts and potential connectivity disruptions.

Details of your setup

VpnCloud version:
VpnCloud v2.2.0
Description of your VPN setup

• How many nodes?
  3 or 11
• Any NAT involved?
  no
• Any custom routing?
  OSPF

Config file contents
normally in /etc/vpncloud/MYNET.net
‼️ make sure to mask (***) passwords and public IPs/hostnames ‼️

---
device:
  type: tap
  name: tap-vpncloud
  path: ~
  fix-rp-filter: false
mode: switch
switch-timeout: 300
ip: "172.31.1.201-203/24"
ifup: ~
ifdown: ~
crypto:
  password: "strong-password"
  private-key: ~
  public-key: ~
  trusted-keys: []
  algorithms:
    - CHACHA20
listen: "3210"
peers:
  - x.x.x.x:3210
  - y.y.y.y:3210
  - z.z.z.z:3210
peer-timeout: 10
keepalive: 3
beacon:
  store: ~
  load: ~
  interval: 600
  password: "strong-password"
claims:
  - 0.0.0.0/0
auto-claim: true
port-forwarding: false
pid-file: y
stats-file: y
statsd:
  server: ~
  prefix: ~
user: ~
group: ~
hook: ~
hooks: {}

Log entries
normally in /var/log/vpncloud.MYNET.log