Date: Tue, 7 Jul 1998 19:55:33 +0000 From: Niall Smart <rotel@indigo.ie> To: dg@root.com, Samuel S Thomas <sthomas@lart.net> Cc: Poul-Henning Kamp <phk@critter.freebsd.dk>, freebsd-bugs@FreeBSD.ORG Subject: Re: kern/7191: FreeBSD 2.2.6 generates Source-route prohibited when not routing Message-ID: <199807071855.TAA03556@indigo.ie> In-Reply-To: David Greenman <dg@root.com> "Re: kern/7191: FreeBSD 2.2.6 generates Source-route prohibited when not routing" (Jul 7, 9:42am)
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On Jul 7, 9:42am, David Greenman wrote:
} Subject: Re: kern/7191: FreeBSD 2.2.6 generates Source-route prohibited wh
>
> if (!ip_dosourceroute) {
> ! if (ipforwarding) {
> ! char buf[16]; /* aaa.bbb.ccc.ddd\0 */
> ! /*
> ! * Acting as a router, so generate ICMP
> ! */
> nosourcerouting:
> ! strcpy(buf, inet_ntoa(ip->ip_dst));
> ! log(LOG_WARNING,
> ! "attempted source route from %s to %s\n",
> ! inet_ntoa(ip->ip_src), buf);
> ! type = ICMP_UNREACH;
> ! code = ICMP_UNREACH_SRCFAIL;
> ! goto bad;
> ! } else {
> ! /*
> ! * Not acting as a router, so silently drop.
> ! */
> ! ipstat.ips_cantforward++;
> ! m_freem(m);
> ! return (1);
> ! }
Hi,
Does this patch mean that if a machine receives a source routed
packet which is destined for it then it will be silently dropped
if source routing is disabled? Shouldn't we log such occurences?
Niall
--
Niall Smart. PGP: finger njs3@motmot.doc.ic.ac.uk
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