[j-nsp] Help Needed for Bonjour Routing/OSX Clients

[Jonathan Lassoff]

On Thu, May 10, 2012 at 9:21 AM, Phil Mayers <p.mayers at imperial.ac.uk>wrote:

> On 10/05/12 17:12, Jonathan Lassoff wrote:
>
>> On Thu, May 10, 2012 at 2:54 AM, Phil Mayers <p.mayers at imperial.ac.uk
>> <mailto:p.mayers at imperial.ac.**uk <p.mayers at imperial.ac.uk>>> wrote:
>>
>>    On 09/05/12 22:55, Jonathan Lassoff wrote:
>>
>>        I've gotten this to work in the past, but it ended up being a
>>        LOT more work
>>        than just using DNS names and routing (which I've subsequently
>>        done each
>>        time).
>>
>>
>>    Out of curiosity, how did this work? Isn't most mDNS traffic TTL=1?
>>
>>
>> I don't know about all the various implementations out there (of if the
>> standard says anything), but my modern-ish OSX box does 255:
>>
>
> Ok. Though I note that they're both link-local multicast groups, so again
> I wonder how people did them cross-subnet.
>

Oh, I'm not sure if v6 link-local groups can/should be routed. I see no
reason that a device could be configured to allow joins from multiple
links/LANs and forward frames accordingly. ff02::fb is in the link-local
scope however.

Interestingly, ff05::fb is a site-local scoped address that's been set
aside, but I don't know or haven't run across any clients that use this.
It's documented in
http://tools.ietf.org/html/draft-cheshire-dnsext-multicastdns-15

In the past, I did this with the v4 traffic.

Cheers,
jof