Noob question about Dual WAN

Hello,
have some beginner questions about my own dual WAN project!

I have a RB2011UAS-2HnD, on ether1 is my “fast” internet (45/45), on ether10 the “slow” DSL (4/0,5)

Both wan gateway from my isp´s are registered as a route (the gateway from the “slow” internet with distance “2”) for fail over, works without Problems if i disconnect ehter1!

But my goal is that one unit (raspi server with one open port) on my network only use the “slow” dsl internet, except when the “fast” line is down all other devices also use the “slow” Internet as a fail over!

Does this work at all? If so I would appreciate help very much!

Something like this:

/ip firewall mangle add chain=prerouting scr-address=ip_raspi action=mark-routing new-routing-mark=raspi

/ip route add gateway=gateway2 routing-mark=raspi distance=1

/ip route add gateway=gateway1 routing-mark=raspi distance=2



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Thank You! Works perfect! :smiley: