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suddenly unable to add port forward for a static LAN IP

I've been a Comcast Business Class customer for over 3 years using the same device a Cisco DPC3941B DOCSIS Software Version: 2.3.10.13_5.5.0.5 Software Image Name: DPC3941B_3.9p17s1_PROD_sey Advanced Services: DPC3941B My DHCP scope is setup to start at 10.1.10.1

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suddenly unable to add port forward for a static LAN IP

I've been a Comcast Business Class customer for over 3 years using the same device a Cisco DPC3941B DOCSIS Software Version: 2.3.10.13_5.5.0.5 Software Image Name: DPC3941B_3.9p17s1_PROD_sey Advanced Services: DPC3941B My DHCP scope is setup to start at 10.1.10.1

B

Seems like Xfinity is only allowing ports to be forwarded on the DHCP range of the local network. Not sure why, possibly it's a bug, but to get around it. Change your DHCP start/end range to cover the local IP you are trying to forward, then setup yo

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