thread 'main' panicked, message: "Address family not supported by protocol"

[gutleib]

Describe the bug

service does not start after the initial configuration

Details of your setup

I'm configuring the service on the first server in batch. After the initial setup as a tap device in switch mode I have tried to start the service to no avail. It fails with a single line in syslog, which I will post further.

VpnCloud version: vpncloud 2.2.0

Description of your VPN setup

• How many nodes? the first one
• Any NAT involved? no
• Any custom routing? no Config file contents

  ---
  device:
  type: tap
  name: vpncloud%d
  path: ~
  fix-rp-filter: false
  ip: ~
  ifup: ~
  ifdown: ~
  crypto:
  password: secret
  private-key: ~
  public-key: ~
  trusted-keys: []
  algorithms:
  - AES256
  - CHACHA20
  listen: "x.x.x.x:10000"
  peers:
  - "y.y.y.y:10000"
  peer-timeout: 300
  keepalive: ~
  beacon:
  store: ~
  load: ~
  interval: 3600
  password: ~
  mode: switch
  switch-timeout: 300
  claims: []
  auto-claim: true
  port-forwarding: true
  pid-file: ~
  stats-file: ~
  statsd:
  server: ~
  prefix: ~
  user: nobody
  group: nogroup
  hook: ~
  hooks: {}

  Log entries

syslog states:

Jun 13 02:05:52 gw1z1 vpncloud[7494]: INFO - Reading config file '/etc/vpncloud/p-mesh.net'
Jun 13 02:05:52 gw1z1 vpncloud[7494]: INFO - Opened device vpncloud0
Jun 13 02:05:52 gw1z1 vpncloud[7494]: INFO - Setting MTU 1413 on device vpncloud0
Jun 13 02:05:52 gw1z1 vpncloud[7494]: WARN - Your networking configuration might be affected by a vulnerability (https://vpncloud.ddswd.de/docs/security/cve-2019-14899/), please change your rp_filter setting to>
Jun 13 02:05:52 gw1z1 vpncloud[7494]: thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 97, kind: Other, message: "Address family not supported by protocol" }', src/net.rs:25:39
Jun 13 02:05:52 gw1z1 vpncloud[7494]: note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

[dswd]

Please try the current master, that should fix the issue.