Wear a hat, jacket, and sunglasses.
If they ask - tell them 'it's not me'.
Don't forget a stick on moustache. Having no facial hair is a footprint for sure.
My modem nor my mobile data operator does not support IPv6 afaik but I will check again.Are you sure you're not using IPV6 on your system? There might be a ipv6 leak.
Also, how are you using your IPs? Proxy?
I would try disabling ipv6 and just use ipv4, and if not that then try using a cheap/free VPN to make sure its not something else.
No...use an rdp