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    Cannot allocate TUN/TAP dev dynamically

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    • C
      ChrisR
      last edited by

      Hi,

      I recently built a pfSense gateway - I'm really impressed and happy with the package - using it primarily for firewall and VPN capabilities. The online docs are great.

      I've got just one annoying problem. In openVPN, after a reboot, I get the following openVPN logs:

      Jan 4 20:06:26 openvpn[386]: Exiting
      Jan 4 20:06:26 openvpn[386]: Cannot allocate TUN/TAP dev dynamically
      Jan 4 20:06:26 openvpn[386]: gw #.#.#.#
      (rest of the previous logs look OK up to this point).

      And the openVPN tunnel is down.

      But if I go into the GUI, and simply save the existing server config, the openVPN service restarts normally.

      Jan 4 20:11:47 openvpn[2039]: Initialization Sequence Completed
      (snip)
      Jan 4 20:11:46 openvpn[2024]: /etc/rc.filter_configure tun0 1500 1557 #.#.#.# #.#.#.# init
      Jan 4 20:11:46 openvpn[2024]: /sbin/ifconfig tun0 #.#.#.# #.#.#.# mtu 1500 netmask 255.255.255.255 up
      Jan 4 20:11:46 openvpn[2024]: TUN/TAP device /dev/tun0 opened
      Jan 4 20:11:46 openvpn[2024]: gw #.#.#.#
      (snip)

      Seems like during a reboot, openVPN is trying to initialize before the tun device has been configured.

      Had this behaviour on 1.2.3-RC3 and still on 1.2.3-RELEASE. It's not too bad to live with it for planned reboots - but if the GW restarts due to a crash - the VPN will be down… until our remote users start hitting the phones!!

      I'm new to pfsense and openVPN - but is there a way to delay the initialization of openvpn until the tun device is ready?

      Thanks for a great product.

      Chris.

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