12.01.2016 20:26, Hannes Frederic Sowa пишет:

If it would be 0 the rfc1812 applies and
should stop servers to send such redirects and clients to accept those.

Well, this is a very interesting point that
contradicts with all assumptions of the prev thread.
The assumptions were based on this document:
https://www.frozentux.net/ipsysctl-tutorial/chunkyhtml/theconfvariables.html
which says:
---
The shared_media setting tells the kernel if the physical network connected to a specific network card is a shared media or not. For example, if several different IP networks with different netmasks
operate over the same physical media or not.
*The main effect that this variable makes, is to tell the kernel whether it should send ICMP redirects to specific networks or not.*
---

But you seem to be saying that rfc1812 applies when it
is _disabled_ so the  ICMP redirects should still be sent,
just with the different rules.
So can you confirm that you imply the above document is wrong?