RTL8169SC/A8131 not recognized?

[Light Peak]

Hey all,
I've deployed Untangle before installation of RTL8169SC (PCI NIC), which means I've only got built-in Atheros 8131 10/100/1000 NIC.
After installation, I realized UT needs at least 2 NIC so I bought 2 RTL8169SC PCI card and install one of em into the server.

But I've got an error:

Missing Interfaces.
Untangle requirres two or more network cards. Please reinstall with at least two network cards.

so i guess Debian (UT) doesn't support A8131 built-in NIC so i power off and install another RTL8169SC into the server (which now makes 3 NIC, 1 A8131 and 2 RTL8169SC).

Then I power back on the server (and automatically enters setup)
but another error happened again:

Unable to remap the interfaces.
Unable to configure the external interface.

then I clicked OK and click Refresh, I get the same old error:

Missing Interfaces.
Untangle requirres two or more network cards. Please reinstall with at least two network cards.

Does it mean that I'll have to reinstall the UT server or what?

[johnsonx42]

yes, re-install. you're stuck in some undefined mode. there was a single-nic "ReRouter" mode that was permanently enabled if you installed UT with less than 2 nics. It's been removed, but I don't know what you get now if you don't install with 2 nics. It's a new install, so you can't have any existing configuration that you don't want to lose, so just re-install and get to a supported configuration.

[jcoffin]

As johnsonx42 said, star the installation from scratch. ReRouter is no longer in UT and this error message was added to warn during installation.

[Light Peak]

okay, i've reinstalled untangle but also switched to another UTM.
Thanks guys.