XB7 Gateway > Connection > WAN Network DOCSIS /Ethernet/Auto
On the XB7 under Gateway > Connection > WAN Network there is a dropdown for DOCSIS /Ethernet/Auto.
When you change it to Ethernet then under Gateway > Hardware > LAN Ethernet, Port 4 shows as WAN Ethernet.
Set to Auto could this be a dual wan failover setup? Primary from the Comcast, secondary from another WAN source plugged in to Port 4 ?
On page 14 of the user manual;
"The lower right port supports 2.5 Gbps and may be configured as an Ethernet WAN port when connected to a