SNAT when having multiple gateways

Dear Experts,

 

 

I'm using a wildcard virtual server to Load Balance outgoing DNS traffic through different ISP, the issue that i'm facing that it seems that once the gateway is chosen from the Pool any SNAT address is chosen to SNAT the traffic, which will make a problem because both my ISP do a source check and if they receive from my link another source address they will block it. so what i need is a configuration with the iRule needed to I can bind between the gateway IP address and the SNAT address.

 

 

and Here;s the current configuration that i'm using.

 

 

pool TestDNS1FWPool {

 

monitor all gateway_icmp

 

members

 

X.X.X.1:any

 

Y.Y.Y.1:any

 

}

 

 

snatpool TestDNS1SNATPool {

 

members

 

X.X.X.2

 

Y.Y.Y.2

 

}

 

 

virtual TestDNS1OutgoingVS {

 

mirror enable

 

translate service disable

 

snatpool TestDNS1SNATPool

 

pool TestDNS1FWPool

 

destination any:domain

 

mask none

 

ip protocol udp

 

vlans TestDNS1Int enable

 

}

 

 

Thanks in advance.