Date: Sun, 06 Apr 2008 03:38:12 +0900 From: Hajimu UMEMOTO <ume@freebsd.org> To: wahjava.ml@gmail.com (Ashish Shukla =?UTF-8?B?4KSG4KS24KWA4KS3IOCktg==?= =?UTF-8?B?4KWB4KSV4KWN4KSy?=) Cc: gnome@freebsd.org, freebsd-ports@freebsd.org Subject: Re: net/avahi-app-0.6.22 not returning correct IPv6 link-local address. Message-ID: <ygek5jcno4r.wl%ume@mahoroba.org> In-Reply-To: <87sky2183w.fsf@chateau.d.lf> References: <87sky2183w.fsf@chateau.d.lf>
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Hi,
>>>>> On Fri, 04 Apr 2008 11:20:43 +0530
>>>>> Ashish Shukla =E0=A4=86=E0=A4=B6=E0=A5=80=E0=A4=B7 =E0=A4=B6=E0=A5=81=
=E0=A4=95=E0=A5=8D=E0=A4=B2 <wahjava.ml@gmail.com> said:
wahjava> I noticed that avahi-resolve is returning incorrect IPv6 link-local
wahjava> address for a local interface.
wahjava> I tried looking up for the issue myself, but I'm not familiar with=
the
wahjava> interface, avahi is using to lookup interface's address.
wahjava> ---->8---->8----
wahjava> [abbe@monte-cristo ~/ports/avahi-app]$ ifconfig rl0
wahjava> rl0: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0=
mtu 1500
wahjava> options=3D8<VLAN_MTU>
wahjava> ether 00:1b:38:ea:5c:76
wahjava> inet6 fe80::21b:38ff:feea:5c76%rl0 prefixlen 64 scopeid 0x=
1=20
wahjava> inet 172.16.0.7 netmask 0xffffffe0 broadcast 172.16.0.31
wahjava> inet6 fdxx:xxxx:xxxx::yyyy prefixlen 48=20
wahjava> media: Ethernet autoselect (100baseTX <full-duplex>)
wahjava> status: active
wahjava> [abbe@monte-cristo ~/ports/avahi-app]$ avahi-resolve -6 -n monte-c=
risto.local
wahjava> monte-cristo.local fe80:1::21b:38ff:feea:5c76
wahjava> [abbe@monte-cristo ~/ports/avahi-app]$ uname -a
wahjava> FreeBSD monte-cristo.fr 7.0-RELEASE FreeBSD 7.0-RELEASE #0: Sun Ma=
r 30
wahjava> 12:05:36 IST 2008 root@monte-cristo.fr:/usr/obj/usr/src/sys/ULE
wahjava> amd64=20
wahjava> ----8<----8<----
wahjava> Can anyone else confirm this ? Or problem with my configuration, h=
mm...?
It seems a KAME specific embedded scope-id is exposed. Pleased try
the attached patch.
Sincerely,
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Index: avahi-core/iface-pfroute.c
diff -u -p avahi-core/iface-pfroute.c.orig avahi-core/iface-pfroute.c
--- avahi-core/iface-pfroute.c.orig 2007-09-03 21:32:41.000000000 +0900
+++ avahi-core/iface-pfroute.c 2008-04-06 03:06:24.000000000 +0900
@@ -172,6 +172,12 @@ static void rtm_addr(struct rt_msghdr *r
break;
case RTA_IFA:
memcpy(raddr.data.data, &((struct sockaddr_in6 *)sa)->sin6_addr, sizeof(struct in6_addr));
+#ifdef __KAME__
+ if (IN6_IS_ADDR_LINKLOCAL((struct in6_addr *)raddr.data.data)) {
+ ((struct in6_addr *)raddr.data.data)->s6_addr[2] = 0;
+ ((struct in6_addr *)raddr.data.data)->s6_addr[3] = 0;
+ }
+#endif
raddr_valid = 1;
default:
break;
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Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan
ume@mahoroba.org ume@{,jp.}FreeBSD.org
http://www.imasy.org/~ume/
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