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Re: missing icmp errors for udp packets

To: clemens <therapy@xxxxxxxxxxxxx>
Subject: Re: missing icmp errors for udp packets
From: Pekka Savola <pekkas@xxxxxxxxxx>
Date: Sun, 29 Jul 2001 14:49:42 +0300 (EEST)
Cc: <netdev@xxxxxxxxxxx>
In-reply-to: <20010729131615.A382@xxxxxxxxxxxxxxxxxxxxx>
Sender: owner-netdev@xxxxxxxxxxx
On Sun, 29 Jul 2001, clemens wrote:
> does this somehow explain why this whole issue doesn't apply to the loopback
> devices?

Loopback is not subject to these restrictions,
net/ipv4/icmp.c:icmpv4_xrlim_allow :

        /* No rate limit on loopback */
        if (dst->dev && (dst->dev->flags&IFF_LOOPBACK))
                return 1;

Pekka Savola                 "Tell me of difficulties surmounted,
Netcore Oy                   not those you stumble over and fall"
Systems. Networks. Security.  -- Robert Jordan: A Crown of Swords

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