netdev - Re: Regarding VRF support in Linux Kernel

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Message-ID: <9f564111-ae64-fc3b-2854-63ba87b0f4df@cumulusnetworks.com>
Date:	Wed, 22 Jun 2016 16:12:57 -0600
From:	David Ahern <dsa@...ulusnetworks.com>
To:	Randy Dunlap <rdunlap@...radead.org>,
	Ajith Adapa <adapa.ajith@...il.com>, netdev@...r.kernel.org
Subject: Re: Regarding VRF support in Linux Kernel

On 6/22/16 4:03 PM, Randy Dunlap wrote:
> On 06/22/16 14:05, Ajith Adapa wrote:
>> Hi,
>>
>> I am following the steps present in
>> (https://www.kernel.org/doc/Documentation/networking/vrf.txt) and
>> trying to create IPv4 VRF in latest Fedora 24 distribution with 4.5
>> Linux kernel.
>>
>> [root@...alhost ip]# uname -a
>> Linux localhost.localdomain 4.5.5-300.fc24.x86_64 #1 SMP Thu May 19
>> 13:05:32 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
>>
>> I am getting operation not supported error as shown below
>>
>> # ip link add vrf-blue type vrf table 10
>> RTNETLINK answers: Operation not supported

VRF is not enabled in Fedora 24

David

>>
>> Is there any CONFIG option to enable VRF in Linux kernel ?
>
> Yes, in drivers/net/Kconfig:
>
> config NET_VRF
> 	tristate "Virtual Routing and Forwarding (Lite)"
> 	depends on IP_MULTIPLE_TABLES
> 	depends on NET_L3_MASTER_DEV
> 	depends on IPV6 || IPV6=n
> 	depends on IPV6_MULTIPLE_TABLES || IPV6=n
> 	---help---
> 	  This option enables the support for mapping interfaces into VRF's. The
> 	  support enables VRF devices.
>
>
>
>