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Today's Topics:
1. Re: [PATCH] dhcp: Bind to interface when sending
(Joakim Lotseng?rd)
2. Re: [PATCH] dhcp: Bind to interface when sending (Daniel Wagner)
----------------------------------------------------------------------
Message: 1
Date: Mon, 16 Sep 2019 08:51:52 +0000
From: Joakim Lotseng?rd <[email protected]>
To: Daniel Wagner <[email protected]>, "[email protected]"
<[email protected]>
Subject: Re: [PATCH] dhcp: Bind to interface when sending
Message-ID: <[email protected]>
Content-Type: text/plain; charset="utf-8"
Hi Daniel,
On 2019-09-02 08:48, Daniel Wagner wrote:
> On 8/26/19 4:41 PM, Joakim Lotseng?rd wrote:
>> Having two interfaces and one goes down, ConnMan previously sent a
>> DHCP-release only bound to srcIP (via bind), and dstIP, (via connect).
>> If an interface goes down, the Linux kernel will try to route the
>> packet any means possible. Effect was that it routed it out on the
>> other available interface. It might even SNAT the srcIP due to connman
>> NATing setup.
>>
>> The result was a very strange DHCP-release. A dstIP of an DHCP-server
>> that the incorect interface probably could not reach. A srcIP that
>> seemed correct (due to SNAT rule). An included address to release
>> inside the DHCP-release that was not the same as the srcIP, but rather
>> the actual IP to release.
>>
>> This fixes this via setsockopt(.., SO_BINDTODEVICE, ...) which binds
>> the socket to the specific interface name, and packets are not seen on
>> the incorrect interface anymore.
>
> Patch applied.
>
I can't see the patch (nor other patches that got answer "Patch
applied") on
https://git.kernel.org/pub/scm/network/connman/connman.git/. Latest
change is 2019-08-19. Did you forget to push your local tree? Or have I
missed something else?
--
Best regards,
Joakim Lotseng?rd
------------------------------
Message: 2
Date: Mon, 16 Sep 2019 11:33:55 +0200
From: Daniel Wagner <[email protected]>
To: Joakim Lotseng?rd <[email protected]>,
"[email protected]" <[email protected]>
Subject: Re: [PATCH] dhcp: Bind to interface when sending
Message-ID: <[email protected]>
Content-Type: text/plain; charset=utf-8; format=flowed
Hi Joakim,
On 16.09.19 10:51, Joakim Lotseng?rd wrote:
>> Patch applied.
>
> I can't see the patch (nor other patches that got answer "Patch
> applied") on
> https://git.kernel.org/pub/scm/network/connman/connman.git/. Latest
> change is 2019-08-19. Did you forget to push your local tree? Or have I
> missed something else?
Yeah, I forgot to push. Sorry about that. I don't have access to this
machine till Friday. Conference saison...
Thanks,
Daniel
------------------------------
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End of connman Digest, Vol 47, Issue 8
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