Assume a client's traffic is being processed only by a NAT; no SNAT or virtual server processing takes place. Also assume that the NAT definition specifies a NAT address and an origin address while al

The BIG-IP processes traffic initiated from the origin server via the NAT configuration; it would not drop the request as it matches the origin address for outbound translation.

For traffic originating from the internal server and going outwards through the NAT, the source address is translated to the NAT address, not the destination address. The destination address remains the external recipient.

A BIG-IP NAT configuration involves an origin address (the internal IP of the server) and a NAT address (the public IP the server's traffic should appear from). When the origin server initiates traffic through the BIG-IP, the BIG-IP processes the outbound packets by changing the source IP address from the origin server's internal IP to the specified NAT address, while the destination address remains unchanged as it's intended for the remote external host.

The destination address would not change to a self-IP address; it would remain the intended external destination. Only the source address is translated to the configured NAT address.