set_real_ip_from 2400:cb00::
/32;
set_real_ip_from 2606:4700::
/32;
set_real_ip_from 2803:f800::
/32;
set_real_ip_from 2405:b500::
/32;
set_real_ip_from 2405:8100::
/32;
set_real_ip_from 2c0f:f248::
/32;
set_real_ip_from 2a06:98c0::
/29;
# use any of the following two
real_ip_header CF-Connecting-IP;
# Proxy
map $http_upgrade $connection_upgrade {