Need some Level 2 assistance. Router issues, now on wrong external IP
My Comcast business interent has always been rock solid at home and the companies I support. That has not been the case at my latest account.
Router has constantly been broadcasting IPv6 DNS to my internal LAN even though DHCP is clearly turned off for both IPv4 and IPv6. I found posts on the forums about is exact firmware issue all the way back to 2013.
The web interface of the router is only accessible for a few minutes after the router is rebooted, or it may be once I sign out of it the first time it no longer responds.
I discoved last night my router is for some reason on an external IP address range that is not mine. The whole reason of me selling the owner on switching to Comcast from ATT DSL was for a trouble free remote experience. My backside took some damage since he is out of the country right now and can't remote in and I can't fix it.
I don't know if the router is defective or just needs a complete firmware update but given a choice I'd like to replace it with the non-WiFi SMC router than I have at the other sites.
My configuration is very basic. Port 443 forwarded, both wifi channels turned off. IPv4 and IPv6 DHCP off, and I want them REALLY off. I really need to get this fixed and have it stay fixed. Thanks in advance.