RFC 5549?

[Andrey V. Elsukov]

On 11.12.2018 15:07, Andrey V. Elsukov wrote:
>> The FRRouting project has some basic support for rfc 5549 and I've
>> been asked to see if it is possible to get this bit of code working
>> with the FRRouting freebsd kernel interface.  What is RFC 5549 you
>> ask?  The tl;dr of it is that you have v4 prefixes w/ a v6 gateway.
>> For some more background the linux implementation cheats ( and I would
>> like to emphatically point out that I'm not suggesting this solution,
>> I'm giving the linux solution to the problem as a data point to how it
>> was solved in one instance ) by installing a neighbor entry for
>> `169.254.0.1 <outgoing interface> <mac address on the other side>` and
>> when installing the v4 prefix we see the v6 nexthop and replace it
>> with `169.254.0.1 <outgoing interface>` in the netlink message to the
>> kernel.  Is support of RFC 5549 possible in Freebsd?
> 
> I have thought a bit about this, and have some ideas how implement this.
> In general we can install into the kernel routes that has IPv6 address
> as gateway for IPv4 (currently this is not allowed by default, but it is
> easy to allow). So, as a routing daemon developer you can use generic
> API to install routes where RTAX_GATEWAY is IPv6 address.

Hi,

I have implemented basic support, so it can be tested now:

	https://reviews.freebsd.org/D18581

-- 
WBR, Andrey V. Elsukov

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