> Is there any patch for null-interfaces like they exist in Cisco IOS
> available? I'm searching for sth like that to do null-routing, but
> google didn't find anything :/
I guess you mean an interface without an own IP address? Just give it the
IP address of some other interface, with a full (/32) netmask.
The kernel needs at least one IP address per router/host to start
local connections and give ICMP errors an source.
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