proxy_add_x_forwarded_for giving invalid IP address

We are using Nginx to terminate SSL and passing the requests to Varnish and then to Apache
We are getting invalid IP address from Nginx proxy_add_x_forwarded_for and remote_addr
Please find the Nginx settings as mentioned below:


FYI..
SSL is on port 443
Varnish is on port 80
Apache is on port 8080


Nginx Settings:
---------------------------
server {
listen *:443 ssl;
server_name *.website.com;

ssl on;
ssl_certificate /tmp/nginx_prabhathkota.crt;
ssl_certificate_key /tmp/prabhathkota.pem;

location / {
proxy_pass http://127.0.0.1:80;
proxy_read_timeout 90;
proxy_connect_timeout 90;
proxy_redirect off;

proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto https;
proxy_set_header X-Forwarded-Port 443;
proxy_set_header Host $host;
proxy_set_header X-Custom-Header nginx;

}
}