Re: [82attendees] Internet connection sharing

Chris Morrow <morrowc@google.com> Wed, 16 November 2011 02:59 UTC

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Date: Tue, 15 Nov 2011 21:58:55 -0500
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From: Chris Morrow <morrowc@google.com>
To: "Eric Vyncke (evyncke)" <evyncke@cisco.com>
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Cc: 82attendees@ietf.org
Subject: Re: [82attendees] Internet connection sharing
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On Tue, Nov 15, 2011 at 9:40 PM, Eric Vyncke (evyncke)
<evyncke@cisco.com> wrote:
> nmblookup -a 130.129.19.170
>
> could help to identify the 'culprit' ;-)
>

apparently they decided to drop off the network?
$ arp -an
? (130.129.16.1) at 00:00:5e:00:01:10 [ether] on wlan0
? (130.129.19.170) at <incomplete> on wlan0

and up/down of the local interface clears the v6 tunnel state too,
which is nice.
(I'll remember the nmblookup for next time!)

-chris

>> -----Original Message-----
>> From: 82attendees-bounces@ietf.org
> [mailto:82attendees-bounces@ietf.org] On
>> Behalf Of Chris Morrow
>> Sent: mercredi 16 novembre 2011 09:48
>> To: 82attendees@ietf.org
>> Subject: [82attendees] Internet connection sharing
>>
>> considered harmful... on the conference network
>>
>>
>> wlan0     Link encap:Ethernet  HWaddr 00:24:d7:9a:c0:78
>>           inet addr:130.129.22.11  Bcast:130.129.23.255
> Mask:255.255.248.0
>>           inet6 addr: 2001:df8:0:96:224:d7ff:fe9a:c078/64 Scope:Global
>>           inet6 addr: fec0::9:224:d7ff:fe9a:c078/64 Scope:Site
>>           inet6 addr: 2002:8281:13aa:9:224:d7ff:fe9a:c078/64
> Scope:Global
>>           inet6 addr: 2001:df8:0:16:224:d7ff:fe9a:c078/64 Scope:Global
>>           inet6 addr: fe80::224:d7ff:fe9a:c078/64 Scope:Link
>>
>> please user of ip address:
>>
>> $ whois 2002:8281:13aa:9:224:d7ff:fe9a:c078
>>
>> Querying for the IPv4 endpoint 130.129.19.170 of a 6to4 IPv6 address.
>>
>> #
>> # Query terms are ambiguous.  The query is assumed to be:
>> #     "n 130.129.19.170"
>>
>>
>> with mac address:
>>
>> $ arp -an
>> ? (130.129.19.170) at 00:1a:73:a0:fd:f1 [ether] on wlan0
>>
>> (you apparently have a gemtek NIC)
>>
>> would you kindly disable internet connection sharing? :)
>>
>> You aren't really sharing if you blackhole all packets :(
>> $ ping6 ipv6.google.com
>> PING ipv6.google.com(2404:6800:8002::67) 56 data bytes
>> ^C
>> --- ipv6.google.com ping statistics ---
>> 3 packets transmitted, 0 received, 100% packet loss, time 1999ms
>>
>>
>> -chris
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