How do I configure Nat so that Internet is only acessed via a specific interface or ip-address?
We have only one public ip-address per interface as the use of aliases is not possible for some german ISPs.
I could make a SNAT rule translating the SRC to the outgoing IP that i want. The Answer packet will flow to the appropriate Interface with the desired ip-address then, but out of which interface is the initial packet forwarded?
It would make sense to me that if the used interface matches the SRC address in the nat rule considering a interface with that ip exists in the first place.
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