netdev - Re: Traceroute and "ping" sockets: some questions

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Message-Id: <20110819.043816.1648681777223816477.davem@davemloft.net>
Date:	Fri, 19 Aug 2011 04:38:16 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	buc@...sz.so-cdu.ru
Cc:	netdev@...r.kernel.org
Subject: Re: Traceroute and "ping" sockets: some questions

From: Dmitry Butskoy <buc@...sz.so-cdu.ru>
Date: Fri, 19 Aug 2011 15:19:16 +0400

> I would like to ask some questions:
> 
> - Currently such "ping" sockets implemented for IPv4 only. Are there any
> - plans to implement it for IPv6 as well?

I think the original authors of the kernel component said they would
work on this, but it hasn't materialized yet.

> - Are there any plans to implement some "rate control" (maybe
> - sysctl-configurable too), to restrict unprivileged users to send icmp
> - echoes too fast (ie. faster than 200 ms -- the current ping(8)
> - restriction)?

Why limit?  He can spam with UDP socket just as easily at any rate
he pleases, and rate limiting is policy issue and there relegated
to netfilter and/or the packet scheduler layer.
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