APU/PFSense 2.3 hangs while booting on VLANs

[MaTi8383]

Hi,

First and foremost I hope this is the right subforum for this question.
If not, I appologize.

I am trying to install a new APU2 as fw in a network running pfsense 2.3.
Installation went fine and configuring the interfaces and basic settings via the GUI as well.
For the WAN to work I need to use a VLAN (131). When I do this via GUI the connection comes up as expected and I receive an IP over DHCP from the ISP.

However, when I reboot the machine remains unreachable.
Looking via the console I see it is hanging. The last thing it says is:

'Configuring VLAN interfaces…'

Rebooting results into the same.

Now, when I physically remove the WAN cable from the interface, pfsense does boot as expected.
When I plug back in the WAN cable and choose 'assign IP to interface' (or whatever its called) to force a new dhcpreq for my wan it mentions it is saving the WAN config.
This takes longer than I am used to (~15-20sec), but afterwards the interface and connection are UP though. (incl dhcp lease from my isp)

When I reboot the apu2 again, it hangs again like before..

Anyone any clue?
Should I test anything, or ie provide logs, please be so kind to tell me how to collect them for you.
(I am a BSD noob and happy there is a menu in the console and an amazing GUI for further usage) ;-)

Thanks in advance!

[MaTi8383]

Anyone any idea or suggestions what to try/check please?
I am considering trying the latest pre-2.3 version.. would that be a good option?

(not sure what exactly has been changed in 2.3.. Any vulnerabilities to take into account for example?)

[MaTi8383]

Anyone, please..?

[canadianllama]

Did you get an answer to this? Having this issue with WAN INTERFACE right now.