Hi

I know I'm late, but have you tested this?
Did it actually work with Salt?

Thanks and best regards
Jeffry

With the right SFP module and support from Salt. Yes

Original SFP module from Swisscom/Wingo in the USG works when VLAN 10 is selected.
Yes, I'm a few years late, but maybe it will help someone!

You need another modem instead of the SaltBox, because the USG can take over the router function but not that of a modem. Many use a Draytek Vigor as a modem. Since network providers usually supply a multi-device (modem and router in one device), you have the problem of double NAT.