Nginx proxy_bind failing

# /opt/sbin/nginx -v
nginx version: nginx/1.19.2 (x86_64-pc-linux-gnu)

All:

I'm attempting to configure nginx to reverse proxy requests from the same Internal Host Address (192.168.0.2) that it's listening from.

user admin root;
#user nobody;
worker_processes  1;

events {
    worker_connections  64;
}

http {
    # HTTPS server

    server {
        listen       192.168.0.2:443 ssl;
        server_name  z1.fm;

        ssl_certificate      /etc/cert.pem;
        ssl_certificate_key  /etc/key.pem;

        ssl_session_cache    shared:SSL:1m;
        ssl_session_timeout  5m;

        ssl_ciphers  HIGH:!aNULL:!MD5;
        ssl_prefer_server_ciphers  on;

        location / {
    #        root   html;
    #        index  index.html index.htm;
            proxy_bind 192.168.0.2;
            proxy_pass http://z1.fm;
    #        proxy_bind $server_addr;
    #        proxy_bind $host;
    #        proxy_bind 192.168.0.2 transparent;
        }
    }
}

I've tried changing the user admin root; which is the root user for this router. I've tried using different combinations of proxy_bind 192.168.0.2;, proxy_bind 192.168.0.2 transparent;, proxy_bind $server_addr;, and proxy_bind $server_addr transparent;. None of them appear to work, when validating with tcpdump. nginx always uses the External WAN Address (100.64.8.236).

08:46:57.433138  In c8:1f:66:13:a1:11 (oui Unknown) ethertype IPv4 (0x0800), length 928: 192.168.0.154.50878 > 192.168.0.2.https: Flags [P.], seq 603:1475, ack 1582, win 8212, length 872
08:46:57.433138  In c8:1f:66:13:a1:11 (oui Unknown) ethertype IPv4 (0x0800), length 928: 192.168.0.154.50878 > 192.168.0.2.https: Flags [P.], seq 603:1475, ack 1582, win 8212, length 872
08:46:57.433324 Out c0:56:27:d1:b8:a4 (oui Unknown) ethertype IPv4 (0x0800), length 56: 192.168.0.2.https > 192.168.0.154.50878: Flags [.], ack 1475, win 541, length 0
08:46:57.433350 Out c0:56:27:d1:b8:a4 (oui Unknown) ethertype IPv4 (0x0800), length 56: 192.168.0.2.https > 192.168.0.154.50878: Flags [.], ack 1475, win 541, length 0
08:46:57.437523 Out c0:56:27:d1:b8:a4 (oui Unknown) ethertype IPv4 (0x0800), length 76: 100.64.8.236.52190 > 104.27.161.206.www: Flags [S], seq 2078181771, win 5840, options [mss 1460,sackOK,TS val 1582735 ecr 0,nop,wscale 4], length 0
08:46:57.439702  In 02:1f:a0:00:00:09 (oui Unknown) ethertype IPv4 (0x0800), length 68: 104.27.161.206.www > 100.64.8.236.52190: Flags [S.], seq 1779441095, ack 2078181772, win 65535, options [mss 1400,nop,nop,sackOK,nop,wscale 10], length 0
08:46:57.439885 Out c0:56:27:d1:b8:a4 (oui Unknown) ethertype IPv4 (0x0800), length 56: 100.64.8.236.52190 > 104.27.161.206.www: Flags [.], ack 1, win 365, length 0
08:46:57.440199 Out c0:56:27:d1:b8:a4 (oui Unknown) ethertype IPv4 (0x0800), length 902: 100.64.8.236.52190 > 104.27.161.206.www: Flags [P.], seq 1:847, ack 1, win 365, length 846: HTTP: GET / HTTP/1.0
08:46:57.442032  In 02:1f:a0:00:00:09 (oui Unknown) ethertype IPv4 (0x0800), length 62: 104.27.161.206.www > 100.64.8.236.52190: Flags [.], ack 847, win 66, length 0
08:46:57.451999  In 02:1f:a0:00:00:09 (oui Unknown) ethertype IPv4 (0x0800), length 1516: 104.27.161.206.www > 100.64.8.236.52190: Flags [.], seq 1:1461, ack 847, win 66, length 1460: HTTP: HTTP/1.1 403 Forbidden
08:46:57.452122 Out c0:56:27:d1:b8:a4 (oui Unknown) ethertype IPv4 (0x0800), length 56: 100.64.8.236.52190 > 104.27.161.206.www: Flags [.], ack 1461, win 548, length 0
08:46:57.452009  In 02:1f:a0:00:00:09 (oui Unknown) ethertype IPv4 (0x0800), length 564: 104.27.161.206.www > 100.64.8.236.52190: Flags [P.], seq 1461:1969, ack 847, win 66, length 508: HTTP

The reverse proxied requests make it to the destination and back, but using the External WAN Address (100.64.8.236) and not the Internal Host Address (192.168.0.2).

Any ideas?

Thanks!

Gary

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