Issues with LAN connection to downstream router
We have had T-Mobile Home Internet for over 4 years with no issues. A few weeks ago we started having random connection problems. Still had the old Nokia trash can gateway. They sent us the new G5AR gateway and a new SIM card. Now wifi when connected directly to the G5AR gateway is working but we hare having issues with the downstream router. When doing a ping google we are getting random 192.0.0.1 Destination host unreachable responses. It is a newer Linksys router set to connect to the gateway using DHCP. Worked for years with the Nokia in this configuration. Tried a different even newer Linksys router and getting the exact same issue. Made sure the CAT6 cable was good by testing it. Temporarily ran a new tested good CAT6 cable.
Anyone else experience this? And is there a solution?