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Re: Running code, sending (Was: I-D Action: draft-ietf-6man-ipv6only-flag-03.txt)

Brian E Carpenter <brian.e.carpenter@gmail.com> Sat, 03 November 2018 02:13 UTC

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Subject: Re: Running code, sending (Was: I-D Action: draft-ietf-6man-ipv6only-flag-03.txt)
To: Alexandre Petrescu <alexandre.petrescu@gmail.com>, ipv6@ietf.org
References: <20181019.223739.271916573.sthaug@nethelp.no> <4f58643c-272e-507e-3282-c87befd42395@gmail.com> <0927741c-4e8e-fcf7-ddd6-3ba500ba4c3d@si6networks.com> <7B48A11D-31DE-443C-B73A-14642EA0A397@jisc.ac.uk> <7526af75-4359-6fc6-e39b-eb94024a04de@si6networks.com> <E1BB1232-C1A2-496A-8157-0682D91EED42@steffann.nl> <5E75F3CA-F1D2-4F4F-9CF7-EEEE59634C1E@gmail.com> <C46C990E-0A4F-4731-8CB1-FD204858935E@consulintel.es> <9B53019C-3506-4C9E-AFCF-D6125FA1A65B@gmail.com> <2DC241B3-310B-4A3A-BD4C-C0005FCE6155@consulintel.es> <20181024103057.GD924@hanna.meerval.net> <0219483d-8580-5e4a-8172-9401ef7c97b9@gmail.com> <89235e00-4514-da61-eb5a-366790c71165@gmail.com>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
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Date: Sat, 03 Nov 2018 15:13:28 +1300
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fwiw I have reproduced Alex's test by installing scapy on a Linux box
and using it to forge RAs as from my home gateway with the IPv6-only bit set.
Nothing breaks on the other hosts (Windows 10 and Android), which is
as it should be, and Wireshark confirms that the packets are delivered
and are excellent forgeries.

Regards
   Brian

On 2018-10-25 02:17, Alexandre Petrescu wrote:
> correction: b.res=2 (instead of 1).
> 
> attached the packet capture
> 
> 
> Le 24/10/2018 à 14:43, Alexandre Petrescu a écrit :
>> Hi,
>>
>> Le 24/10/2018 à 12:30, Job Snijders a écrit :
>> [...]
>>> This is not discrimination. If authors don't have the capability to 
>>> develop running code themselves, and also don't have access to
>>> resources nor are able to convince others to implement a protocol
>>> specification... the IETF's prime directive of interoperability can't
>>> be met anyway.
>>
>> On windows install python and scapy, then make an RA[*] and write
>> b.res=1. This sets the 6th Reserved flag, now called 'IPv6-Only'.
>>
>> I just sent one, hoping sky wouldnt fall on my head :-)
>>
>> Alex
>> [*] how to make an RA with scapy tool is described at
>> https://samsclass.info/124/proj11/proj9xN-scapy-ra.html
>>
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