Pass TAG from one Virtual Server to another

Yes your understanding on redirection is correct.

Below is the iRule on VS8080

when HTTP_REQUEST {
 
	# Remove untrusted HTTP X-Forwarded header
	#
 
	#  X-Forwarded headers clean-up
	#
	HTTP::header remove X-Forwarded-For
	HTTP::header remove X-Forwarded-Host
	HTTP::header remove X-Forwarded-Port
	HTTP::header remove X-Forwarded-Proto
	HTTP::header remove X-Real-IP
 
	# Set our own X-Forwarded and X-Real-IP headers
 
	# X-FORWARDED-FOR and X-REAL-IP
	#
	HTTP::header insert X-Forwarded-For [IP::client_addr]
	HTTP::header insert X-Real-IP [IP::client_addr]
 
	# X-FORWARDED-PORT
	#
	HTTP::header insert X-Forwarded-Port [TCP::local_port]
 
}

As you can see we are clearing the XF header and adding the new header to avoid any clients trying to connect already with the XF header.

Though I set a header on VS9090 before redirecting to VS8080 it will be removed by the iRule on VS8080.

Hope this clarifies.