Date: Mon, 04 Feb 2002 02:16:11 +0900 From: Hajimu UMEMOTO <ume@mahoroba.org> To: Marco Wertejuk <wertejuk@mwcis.com> Cc: freebsd-hackers@freebsd.org Subject: Re: rtadvd bugfix? Message-ID: <ygesn8iscys.wl@mille.mahoroba.org> In-Reply-To: <20020202024949.A2176@motoko.hayai.de> References: <20020202024949.A2176@motoko.hayai.de>
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Hi,
>>>>> On Sat, 2 Feb 2002 02:49:49 +0100
>>>>> Marco Wertejuk <wertejuk@mwcis.com> said:
wertejuk> I was really nerved when I noticed that rtadvd is exiting
wertejuk> without any notice if the host is not an ipv6 gateway.
wertejuk> Since it took me a lot of time to find this problem
wertejuk> I wrote a patch for rtadvd to show a message and
wertejuk> noticed something strange:
wertejuk> rtadvd won't exit even if ipv6 forwarding is not
wertejuk> enabled, take a look at this patch. (attachement)
wertejuk> Watch out for the changed if-condition.
wertejuk> Is that really a bug ?
No, I don't think it is a bug. The value of `forwarding' is checked
later. From config.c:
/*
* Basically, hosts MUST NOT send Router Advertisement messages at any
* time (RFC 2461, Section 6.2.3). However, it would sometimes be
* useful to allow hosts to advertise some parameters such as prefix
* information and link MTU. Thus, we allow hosts to invoke rtadvd
* only when router lifetime (on every advertising interface) is
* explicitly set zero. (see also the above section)
*/
if (val && forwarding == 0) {
syslog(LOG_WARNING,
"<%s> non zero router lifetime is specified for %s, "
"which must not be allowed for hosts.",
__FUNCTION__, intface);
exit(1);
}
And, I believe the message goes to syslog in this case.
Sincerely,
--
Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan
ume@mahoroba.org ume@bisd.hitachi.co.jp ume@{,jp.}FreeBSD.org
http://www.imasy.org/~ume/
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