We are facing an issue with a business laptop which once connected to our home VM Wifi, it shows connected but with no internet access. The IT administrators investigated and we reached to the following conclusion:
As advised at the desk we believe the issue here is relating to the Home provider network (Virgin Media) connection causing the issue with the device, every time you connect to that network with our computer, it is changing the DNS Setting on the device from Automatic to Manual and adding in the number 127.0.0.1.
When we revert this setting back on the device and test this on 3 different internet connections (Office Wi-fi, My Personal Hotspot and Your Personal Hotspot), all 3 work without issue via Internet and via VPN, it also changes the DNS to the right one for each connection (Office was 8.8.8.8, My Hotspot was 192.168.105.* and your hotspot was 170.10.*.*) and allows us to go back and forth to each connection without issue.
Based on these tests, the device itself, once we fix the setting back has no issue changing connections, leading the issue to be the Wi-Fi at home causing this. Whether the issue is the Network line or the Wi-Fi Router I can not say for certain but I can confirm, every time you connect to the home Wi-Fi, it changes the DNS setting, and then blocks all internet connections to the device which it should not do.
I'd also want to add that the laptop was further tested in another two public wifi networks (cafes) with no issue with the DNS. Each time the DNS set appropriately by DHCP and the laptop had internet access.
Once connected to the home VM wifi the DNS is set to static 127.0.0.1 (which obviously is not a valid DNS server) and is unable to access the internet again.
Can you please advise?
Nik
