Re: net/ipv4/conf/* config order

[Roberto Nibali <ratz@drugphish.ch>]

Hello,

> sysctl -a|grep source
> net/ipv4/conf/eth2/accept_source_route = 1
> net/ipv4/conf/eth1/accept_source_route = 1
> net/ipv4/conf/eth0/accept_source_route = 1
> net/ipv4/conf/lo/accept_source_route = 1
> net/ipv4/conf/default/accept_source_route = 1
> net/ipv4/conf/all/accept_source_route = 0

Basically, accept_source_route says how to handle packets with the SRR 
option set. If 1 (default for a router) it accepts those packets, if 0 
(default for a host) it will drop them. [This is actually written in 
../Documentation/networking/ip-sysctl.txt]

> so does it mean, that source routed packets are all dropped in all
> interfaces, or does it mean that all accepted?

They will be dropped on all interfaces since /all/accept_source_route=0.
Now you need to know that:

/all/${var}     means: enable this feature ${var}
/default/${var} means: inherit /all/${var} on newly instances of a
                        physical interface

> Yes, I want to disable it, and some other parameters, too, so shall I set
> all of them respectively to 0 or 'all' = 0 will do the task?

all=0 should do the task.

Best regards,
Roberto Nibali, ratz

ps.: I don't think this question belongs to lkml, next time you should
      maybe choose linux-net@vger.kernel.org.
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