Date: Sat, 24 Aug 1996 22:39:11 -0700 (PDT) From: "Rodney W. Grimes" <rgrimes@GndRsh.aac.dev.com> To: robert@chalmers.com.au (Robert Chalmers) Cc: freebsd-isp@FreeBSD.org Subject: Re: Who knows about routed? Message-ID: <199608250539.WAA17651@GndRsh.aac.dev.com> In-Reply-To: <m0uuTlT-00030bC@nanguo.chalmers.com.au> from Robert Chalmers at "Aug 25, 96 11:13:23 am"
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> Can someone routed guru please tell me what this is trying to say,
> apart from the obvious...
>
>
> nanguo routed[304]: bad host in route from eros (af 2)
> nanguo routed[304]: bad host in route from eros (af 2)
^^^^^^ af 2 == INET
^^^^^^^^ this is coming from this part of input.c:
if (((*afp->af_checkhost)(&n->rip_dst)) == 0) {
syslog(LOG_DEBUG,
"bad host in route from %s (af %d)\n",
(*afswitch[from->sa_family].af_format)(from),
from->sa_family);
continue;
}
> Just what does routed see as a "bad host" ?
It means that the IP address is not believed to be an internet host,
and by following the indirection of *afp->af_checkhost you end up in
this chunk of code:
/*
* Return 1 if the address is believed
* for an Internet host -- THIS IS A KLUDGE.
*/
inet_checkhost(sin)
struct sockaddr_in *sin;
{
u_long i = ntohl(sin->sin_addr.s_addr);
#ifndef IN_EXPERIMENTAL
#define IN_EXPERIMENTAL(i) (((long) (i) & 0xe0000000) == 0xe0000000)
#endif
if (IN_EXPERIMENTAL(i) || sin->sin_port != 0)
return (0);
if (i != 0 && (i & 0xff000000) == 0)
return (0);
for (i = 0; i < sizeof(sin->sin_zero)/sizeof(sin->sin_zero[0]); i++)
if (sin->sin_zero[i])
return (0);
return (1);
}
There should probably be additional data in the logged message (ie,
a pretty print of &n->rip_dst->sin_addr.s_addr would tell you exactly
what data was rejected by inet_checkhost.
> it's filling my log files...
The host eros routed is probably sending out funny routes :-(.
--
Rod Grimes rgrimes@gndrsh.aac.dev.com
Accurate Automation Company Reliable computers for FreeBSD
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