netdev - Re: SIOCSIFDSTADDR for IPv6 removed ?

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Message-ID: <468a299b-7f9c-fd3b-bf03-a77f9ff4f77a@gmail.com>
Date:   Wed, 6 Nov 2019 12:27:31 -0700
From:   David Ahern <dsahern@...il.com>
To:     Joakim Tjernlund <Joakim.Tjernlund@...inera.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: SIOCSIFDSTADDR for IPv6 removed ?

On 11/6/19 12:16 PM, Joakim Tjernlund wrote:
> On Wed, 2019-11-06 at 08:55 -0700, David Ahern wrote:
>>
>> On 11/6/19 4:34 AM, Joakim Tjernlund wrote:
>>> From what I can tell, it is not possible to set DSTADDR in IPv6 and I wonder why?
>>>
>>> There is an expectation for IPV6_SIT which can but am using pppoe and there I cannot.
>>>
>>
>> Code is still present and does not appear to have been changed recently.
> 
> Right, IPV6 seems to have been like this(no support for DSTADDR) forever, but why?
> Is it because none has impl. DSTADDR for IPv6 or is there a reason?
> Would a patch adding IPv6 DSTADDR be accepted?
> 

If you have a legitimate use case that is not working, send a patch. Add
a test case (or more) to tools/testing/selftests/net/fcnal-test.sh,
use_cases().