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Using 2 WANs in uplink balancing but force using only one

I have two WANs in uplink balancing and normally one of them is in active interfaces (e.g. WAN1) and the other is in standby (e.g. WAN2).

Sometimes I want to let one of our internal endpoints to connect to the internet via WAN2 so:

1. I move the WAN2 from standby to active

2. define a "Multipath Rule" with:
  Source: Endpoint IP
  Service: Any
  Destination: Internet IPv4
  Persistence: By Interface
  Bind interface: WAN2

3. Sort the WANs with WAN1 on top, WAN2 as the second and set the "Weight" on the Active Interfaces to: WAN1=100 and WAN2=0

Should that be sufficient to avoid other endpoints using the WAN2 as the outbound interface?

I had issues when the "weight" was set to "100 / 10" - I noticed some connections tried to "leak" through WAN2 and I don't want them to use this WAN interface at all.



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