Hi, Yukiyo Akisada:
Thank you very much.
another question, do you think the failure is from my configure file of
v6eval or my linux kernel
Thanks
Wang JiaBo
Yukiyo Akisada 蜀咎％:
> 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 loopback 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 source 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 outside 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 <jiabwang@redhat.com> wrote:
>
>
>> I donot think my test is wrong
>>
>> when I test in icmpv6(RFC4443), I get failure in " Request send to
>> loopback address" section.
>>
>> but I check the tcpdump message, I don't think my test is wrong. so who
>> can help me to get correct answer for the question:my link-local sent echo request to localhost,
>> and get echo reply. but 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::200: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 solicitation, who has fe80::200:ff:fe00:100, length 32
>> 03:45:58.583718 IP6 fe80::200:ff:fe00:100 > fe80::21d:fff:fe0f:be4e:
>> ICMP6, neighbor advertisement, tgt is fe80::200:ff:fe00:100, length 32
>> 03:45:58.583767 IP6 fe80::21d:fff:fe0f:be4e > fe80::200:ff:fe00:100:
>> ICMP6, echo reply, seq 0, length 14
>> 03:45:58.605302 IP6 fe80::200:ff:fe00:100 > localhost6.localdomain6:
>> ICMP6, echo request, seq 0, length 14
>> 03:45:58.605349 IP6 localhost6.localdomain6 > fe80::200:ff:fe00:100:
>> ICMP6, echo reply, seq 0, length 14
>> 03:45:58.626733 IP6 fe80::200:ff:fe00:100 > ff02::1: ICMP6, neighbor
>> advertisement, tgt is fe80::200:ff:fe00:100, length 32
>> 03:45:58.637448 IP6 fe80::200:ff:fe00:100 > fe80::21d:fff:fe0f:be4e:
>> ICMP6, echo request, seq 0, length 14
>> 03:45:58.637495 IP6 fe80::21d:fff:fe0f:be4e > fe80::200:ff:fe00:100:
>> ICMP6, echo reply, seq 0, length 14
>> 03:46:03.637488 IP6 fe80::21d:fff: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::200:ff:fe00:100:
>> ICMP6, neighbor solicitation, who has fe80::200:ff:fe00:100, length 32
>> 03:46:05.637988 IP6 fe80::21d:fff:fe0f:be4e > fe80::200:ff:fe00:100:
>> ICMP6, neighbor solicitation, who has fe80::200:ff:fe00:100, length 32
>>
>>
>> [TAHI] tcpdump message:
>>
>> tcpdump -r 71.html.Link0.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
>> 04:30:19.694252 IP6 fe80::200:ff:fe00:100 > fe80::200:2ff:fe00:27cd:
>> ICMP6, neighbor advertisement, tgt is fe80::200:ff:fe00:100, 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 > 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::200:ff:fe00:100, length 32
>> 04:30:25.219835 IP6 fe80::200:ff:fe00:100 > fe80::200:2ff:fe00:27cd:
>> ICMP6, echo request, seq 0, length 14
>> 04:30:25.220171 IP6 fe80::200:2ff:fe00:27cd > fe80::200:ff:fe00:100:
>> ICMP6, echo reply, seq 0, length 14
>> 04:30:30.218676 IP6 fe80::200:2ff:fe00:27cd > fe80::200:ff:fe00:100:
>> ICMP6, neighbor solicitation, 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::200:ff:fe00:100, length 32
>> 04:30:32.218247 IP6 fe80::200:2ff:fe00:27cd > fe80::200:ff:fe00:100:
>> ICMP6, neighbor solicitation, who has fe80::200:ff:fe00:100, length 32
>>
>>
>>
>> thanks
>> best regards
>>
>>
>>
>>
>
>
>