2008-08-18 13:30:08
</FONT></DIV>
<DIV><FONT fac
e=Verdana size=2><STRONG>$BJU<~HK#:(B</STRONG> users </FONT><
/DIV>
<DIV><FONT face=Verdana size=2><STRONG>$B3-KM#:(B</STR
ONG> </FONT></DIV>
<DIV><FONT face=Verdana size=2><STRON
G>$BVwLb#:(B</STRONG> [users:00844] Re: help
explain:IPv6-c
ore protocol self_testfor icmpv6 (RFC4443) </FONT></DIV>
<DIV><FONT face=Verdana size=2></FONT> </DIV>
<DIV><FON
T face=Verdana size=2>Hi, Yukiyo Akisada:<BR>
I think
my confiugre file on tn has some problem
, because <BR><PRE wrap="">3:45:58.605302 IP6 fe80::200:f
f:fe00:100 > localhost6.localdomain6:
ICMP6, echo req
uest, seq 0, length 14
03:45:58.605349 IP6 localhost6.lo
caldomain6 > fe80::200:ff:fe00:100:
ICMP6, echo reply
, seq 0, length 14</PRE>is my tn computer(freebsd
7.0).
<BR> so could you tell me I should care
what, when I
configure tn<BR>Thanks<BR>Best regards<BR
>wang jiabo<BR><BR>Yukiyo Akisada $BP45@(B:
<BLOCKQUOTE cit
e=mid:20080818114216.dfffadd8.akisada@tahi.org type="cite
"><PRE wrap="">Hi, Wang Jiabo.
Please refer RFC 4291 (
IP Version 6 Addressing Architecture).
That says,
472 2.5.3. The Loopback Address
473
474 The unicast address 0:0:0:0:0:0:0:1 is called the loopbac
k address.
475 It may be used by a node to send an IPv6 packet to itself. It must
476 not be assigned to any physical interface. It is treated as having
477 Link-Local scope, and may be thought of as the Link-Local unicast
478 address of a virtual interface (typically called the "loopback
479 interface") to an imaginary link that goes nowhere.
480
481 The loopback address must not be used as the so
urce address in IPv6
482 packets that are sent outside of a single node. An IPv6 packet with
483 a destination address of loopback must never be sent outs
ide of a
484 single node and must never be forwarded by an IPv6 router. A packet
485 received on an interface with a destination address of loopback must
486 be dropped.
So you must ignore the packet regarding to line 484-486.
Thanks,
On Tue, 12 Aug
2008 14:53:46 +0800
wang_jiabo <A class=moz-txt-link-rf
c2396E href="mailto:jiabwang@redhat.com"><jiabwang@red
hat.com></A> wrote:
</PRE>
<BLOCKQUOTE type="c
ite"><PRE wrap="">I donot think my test is wrong
when
I test in icmpv6(RFC4443), I get failure in " Request sen
d to
loopback address" section.
but I check the tcpdu
mp message, I don't think my test is wrong. so who
can h
elp me to get correct answer for the question:my link-loc
al sent echo request to localhost,
and get echo reply. b
ut TAHI need that echo request donot need get echo reply.
please tell me why?
my tcpdump message:
tcpdump -r
7.html.Link0.dump
reading from file 7.html.Link0.dump,
link-type EN10MB (Ethernet)
03:45:58.561963 IP6 fe80::20
0:ff:fe00:100 > fe80::21d:fff:fe0f:be4e:
ICMP6, echo
request, seq 0, length 14
03:45:58.562793 IP6 fe80::21d:
fff:fe0f:be4e > ff02::1:ff00:100: ICMP6,
neighbor sol
icitation, who has fe80::200:ff:fe00:100, length 32
03:4
5:58.583718 IP6 fe80::200:ff:fe00:100 > fe80::21d:fff:
fe0f:be4e:
ICMP6, neighbor advertisement, tgt is fe80::2
00:ff:fe00:100, length 32
03:45:58.583767 IP6 fe80::21d:
fff:fe0f:be4e > fe80::200:ff:fe00:100:
ICMP6, echo re
ply, seq 0, length 14
03:45:58.605302 IP6 fe80::200:ff:f
e00:100 > localhost6.localdomain6:
ICMP6, echo reques
t, seq 0, length 14
03:45:58.605349 IP6 localhost6.local
domain6 > fe80::200:ff:fe00:100:
ICMP6, echo reply, s
eq 0, length 14
03:45:58.626733 IP6 fe80::200:ff:fe00:10
0 > ff02::1: ICMP6, neighbor
advertisement, tgt is fe
80::200:ff:fe00:100, length 32
03:45:58.637448 IP6 fe80:
:200:ff:fe00:100 > fe80::21d:fff:fe0f:be4e:
ICMP6, ec
ho request, seq 0, length 14
03:45:58.637495 IP6 fe80::2
1d:fff:fe0f:be4e > fe80::200:ff:fe00:100:
ICMP6, echo
reply, seq 0, length 14
03:46:03.637488 IP6 fe80::21d:f
ff:fe0f:be4e > fe80::200:ff:fe00:100:
ICMP6, neighbor
solicitation, who has fe80::200:ff:fe00:100, length 32
03:46:04.637798 IP6 fe80::21d:fff:fe0f:be4e > fe80::20
0:ff:fe00:100:
ICMP6, neighbor solicitation, who has fe8
0::200:ff:fe00:100, length 32
03:46:05.637988 IP6 fe80::
21d:fff:fe0f:be4e > fe80::200:ff:fe00:100:
ICMP6, nei
ghbor solicitation, who has fe80::200:ff:fe00:100, length
32
[TAHI] tcpdump message:
tcpdump -r 71.html.Li
nk0.dump
reading from file 71.html.Link0.dump, link-type
EN10MB (Ethernet)
04:30:19.486863 IP6 fe80::200:ff:fe00
:100 > fe80::200:2ff:fe00:27cd:
ICMP6, echo request,
seq 0, length 14
04:30:19.487287 IP6 fe80::200:2ff:fe00:
27cd > ff02::1:ff00:100: ICMP6,
neighbor solicitation
, who has fe80::200:ff:fe00:100, length 32
04:30:19.6942
52 IP6 fe80::200:ff:fe00:100 > fe80::200:2ff:fe00:27cd
:
ICMP6, neighbor advertisement, tgt is fe80::200:ff:fe0
0:100, length 32
04:30:19.694627 IP6 fe80::200:2ff:fe00:
27cd > fe80::200:ff:fe00:100:
ICMP6, echo reply, seq
0, length 14
04:30:19.903842 IP6 fe80::200:ff:fe00:100 &
gt; localhost6.localdomain6:
ICMP6, echo request, seq 0,
length 14
04:30:25.115860 IP6 fe80::200:ff:fe00:100 >
; ff02::1: ICMP6, neighbor
advertisement, tgt is fe80::2
00:ff:fe00:100, length 32
04:30:25.219835 IP6 fe80::200:
ff:fe00:100 > fe80::200:2ff:fe00:27cd:
ICMP6, echo re
quest, seq 0, length 14
04:30:25.220171 IP6 fe80::200:2f
f:fe00:27cd > fe80::200:ff:fe00:100:
ICMP6, echo repl
y, seq 0, length 14
04:30:30.218676 IP6 fe80::200:2ff:fe
00:27cd > fe80::200:ff:fe00:100:
ICMP6, neighbor soli
citation, who has fe80::200:ff:fe00:100, length 32
04:30
:31.218447 IP6 fe80::200:2ff:fe00:27cd > fe80::200:ff:
fe00:100:
ICMP6, neighbor solicitation, who has fe80::20
0:ff:fe00:100, length 32
04:30:32.218247 IP6 fe80::200:2
ff:fe00:27cd > fe80::200:ff:fe00:100:
ICMP6, neighbor
solicitation, who has fe80::200:ff:fe00:100, length 32
thanks
best regards
</PRE></BLOCKQUOTE><PRE wrap=""><!---->
</PRE></BLOCKQUOTE><BR></FONT>
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