DHCP different on one interface

[Mettadas]

Hi folks.  I'm a new OPNsense user setting up a DEC840.  When I create an interface on a gig ethernet port, I can then go to services/dhcp and setup dhcp for that interface.  But having created an interface on an SFP port plugged into a switch, that interface is not listed under services/DHCP.  Instead, there are some DHCP options on the interface screen.  Those options are not on the same screen for other interfaces.

What is the reason for this difference?

[axsdenied]

It means you configured that interface to use DHCP, which is typical in WAN interfaces behind cable modems.  If you want to configure it as a lan interface, change the IPv4 Configuration Type to Static.  Set the IPv4 Adress and then you should have an option for DHCP, for that interface.

[Mettadas]

That was it.  Thank you!

Frank.