[Server-devel] [XSCE] Fwd: [support-gang] XO tablet can not connect to XSCE server

[Braddock]

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On 11/09/2013 04:53 PM, Samuel Greenfeld wrote:
> 2. https://github.com/XSCE/xsce/blob/master/vars/default_vars.yml
> seems to imply that the default domain suffix is ".local"
> 
> That is a definite potential bug.  While ".local" is reserved for 
> local use, multicast DNS clients effectively have taken over this 
> domain to the point that older networks which have .local DNS 
> entries have run into a lot of problems.
> 
> A network I used to use was like this so I've seen random failures 
> to resolve things firsthand.

I've been trying to raise the red flag on this (mis)use of .local
since the XSCE sprint in May(?) when I experienced problems using mDNS
with School Server XSCE with both Linux laptops and Internet-in-a-Box
appliances.

Use of "schoolserver.lan" would avoid these problems.

Ubuntu and Debian disable (aka "break") mDNS resolution on the client
when they encounter a "misconfigured" .local domain being used in the
DHCP response.  This happens if they obtain a DHCP lease from a
schoolserver.local.  If they did not deactivate mDNS resolution, then
schoolserver.local resolution would fail when mDNS couldn't resolve it.

I have a request into devel at laptop.org upstream to activate mDNS name
resolution on the OLPC OS to ease IIAB appliance deployments and any
other local resource discovery.

If/When they turn mDNS resolution on in OLPC OS, then XOs in a
schoolserver network will either fail to resolve the
schoolserver.local name, or mDNS will break for all other devices on
the network (ex, Internet-in-a-Box appliances).  I'm not sure which
will break under Fedora/OLPC OS, but something will give.

For more info see my thread on devel at laptop.org
http://lists.laptop.org/pipermail/devel/2013-July/037559.html
and ticket
http://lists.laptop.org/pipermail/bugs/2013-July/118727.html

See also
http://miketelahun.wordpress.com/2012/09/16/stop-using-local-as-the-top-level-domain-for-your-lan/

- -braddock
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