On Wed, May 21, 2008 at 6:33 PM, Joao Ferreira
<[EMAIL PROTECTED]> wrote:
>
> On Wed, 2008-05-21 at 19:20 +0200, Andrew Beekhof wrote:
>> On Wed, May 21, 2008 at 11:54 AM, Joao Ferreira
>> <[EMAIL PROTECTED]> wrote:
>> >
>> >>
>> >> what was the motivation for this feature?
>> >
>> > IP aliasing limitations. Our kernel does not yet support IP alisaing.
>> > It's on the roadmap but we could not wait for it.
>>
>> dare one ask what kind of kernel doesn't support IPs?
>
> well.... my dab... it's not really the kernel.... the kernell supports
> it just fine... the problem is that our own software would behave
> incorrectly in other un-related areas if we were to use IP-aliasing...
>
>>
>> > So basically we had to use and "IP-ignorant" heartbeat.... our heartbeat
>> > is totally unaware of IP addresses.... always uses MAC addresses. When
>> > we need to perform IP take over we use a diferent approach.
>>
>> did you implement it as a separate comms plugin or some other method?
>> because if its a new comms plugin we'd probably accept it into the
>> tree if you're interested

I wrote it as a HBcomm plugin, but didn't create a new one. Instead, I
modified the ucast plugin so I could patch Heartbeat to fit our needs.
Anyway, I guess it wouldn't be hard to make a specific MAC-based ucast
plugin for that kind of use, although Heartbeat would have to depend
on libpcap from now on. Would you be interested in taking a look at my
code, Andrew?

>
> I'll leave this for Nuno to answer... "he is the patching guy"
>
> cheers
> joao
>
>
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>
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