Allows you to map requests to different outgoing IP addresses
	based on the username or source address of the user making
	the request.

	tcp_outgoing_address ipaddr [[!]aclname] ...

	Example where requests from 10.0.0.0/24 will be forwarded
	with source address 10.1.0.1, 10.0.2.0/24 forwarded with
	source address 10.1.0.2 and the rest will be forwarded with
	source address 10.1.0.3.

	acl normal_service_net src 10.0.0.0/24
	acl good_service_net src 10.0.1.0/24 10.0.2.0/24
	tcp_outgoing_address 10.1.0.1 normal_service_net
	tcp_outgoing_address 10.1.0.2 good_service_net
	tcp_outgoing_address 10.1.0.3

	Processing proceeds in the order specified, and stops at first fully
	matching line.

	Note: The use of this directive using client dependent ACLs is
	incompatible with the use of server side persistent connections. To
	ensure correct results it is best to set server_persistent_connections
	to off when using this directive in such configurations.