mutlipath rule issue

As I see we make dedicated interface for the internet(eth4) only but I found red use the same line so pls can you advice for the best scenario for this

I need to make dedicated interface for specific line for example

One line for mail
One line for browsing internet
Others for red (4 interfaces)
Below the pic of eth 4 which we use it for internet only but as you see it pass Astro red

my current configuration are as mentioned below

Multipath rule : (for internet interface eth4 (internet))

Name : websurfing
position :1
source : internal network
service : web surfing
desitination : any
ltf.persistence : by interface
bind interface : internet

uplink balancing :

active interfaces---
wan
internet
red1
red2
red3
red4

right now i am testing with only one multipath rule for web surfing but i found on interface monitoring red traffic also going through this interface eth4
check the attached sceenshots...

should i use all red in one group and make separate multipath rule ?

what is the best scenario i can use multipath rules....

Thanks in advance...

Attached Images

	red traffic on eth 4.jpg (33.7 KB)
	red traffic on eth 4(2).jpg (45.4 KB)