howto/networksettings.md
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@@ -7,7 +7,7 @@ The third rule of dn42: Allow ip forwarding!
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No serious, in case some packets are dropped check first if your settings are correct.
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`rp_filter` also known as reverse path filtering is a security measure.
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-When the reverse route to the source interface does not match the source address of the package, the packet is dropped. However dn42 routes can be asymmetric. Which means, packets can take different routes on the return path.
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+When the route to return a packet uses a different interface than it arrived from, the packet is dropped. However dn42 routes can be asymmetric. Which means, packets can take different routes on the return path.
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That is why `rp_filter` needs to be disabled.
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**Note** using sysctl is not persistent. Depending on your linux distribution put it into `/etc/sysctl.conf` or `/etc/sysctl.d`