SFR will switch you from cgnat to ipv4 if you contact customer support and explain that you work from home and need to open specific ports to access your work s

SFR will switch you from cgnat to ipv4 if you contact customer support and explain that you work from home and need to open specific ports to access your work servers or VPN. I did just this a month ago. Takes less than 24 hours and you should be OK on ipv4.