[AusNOG] Telstra using US DOD IP's like they are RFC1918

[Edwin Groothuis]

On 22/04/2016 11:31 am, Ben Hohnke wrote:
> That site does state that those ranges aren't advertised publicly, and
> only used internally - at lease I'm not receiving them on my feeds:
> xxx-xxx-BDR01#sh ip bgp 30.0.0.0
> % Network not in table
> xxx-xxx-BDR01#sh ip bgp 30.0.0.0/8 <http://30.0.0.0/8> longer-prefixes
> xxx-xxx-BDR01#
> 
> Doesn't make it right, however I'm sure in a network of Telstra's scale,
> RFC1918 exhaustion is would be an issue!

240.0.0.0/4 is only unused because "Many implementations of the TCP/IP
protocol stack have the 240.0.0.0/4 address block marked as
experimental, and prevent the host from forwarding IP packets with
addresses drawn from this address block.". However, since this is only
for their internal network WAN links, the only hosts who need to be able
to access this are the hosts inside that network. Since that is a small
subset of devices, I find it hard to believe that Telstra couldn't
convince their vendors to make a (hidden) knob somewhere to make this IP
space reachable on their software.

See also https://tools.ietf.org/html/draft-wilson-class-e-02 and
http://packetlife.net/blog/2010/oct/14/ipv4-exhaustion-what-about-class-e-addresses/

But yeah don't steal other peoples IP space, people will get upset if
you start to leak that.

Edwin



> 
> 
> On Fri, Apr 22, 2016 at 11:21 AM Nathan Brookfield
> <Nathan.Brookfield at simtronic.com.au
> <mailto:Nathan.Brookfield at simtronic.com.au>> wrote:
> 
>     Thus rending anyone who may actually want to reach DOD IP's in those
>     ranges unable to do so and going against RFC's and network best
>     practise.
> 
> 
>     Anyone who does that is questionable, in my opinion at least . . . .
> 
> 
>     ------------------------------------------------------------------------
>     *From:* AusNOG <ausnog-bounces at lists.ausnog.net
>     <mailto:ausnog-bounces at lists.ausnog.net>> on behalf of Damien Luke
>     <damien.luke at gmail.com <mailto:damien.luke at gmail.com>>
>     *Sent:* Friday, 22 April 2016 11:17 AM
>     *To:* ausnog at lists.ausnog.net <mailto:ausnog at lists.ausnog.net>
>     *Subject:* Re: [AusNOG] Telstra using US DOD IP's like they are RFC1918
>      
>     I've generally seen it used when they join two MPLS VPNs, they do a
>     NAT in between to keep the routing domains separate.
> 
>     Damien
> 
>     On Fri, Apr 22, 2016 at 11:09 AM, Bradley Amm
>     <Bradley.Amm at telethonkids.org.au
>     <mailto:Bradley.Amm at telethonkids.org.au>> wrote:
> 
>         Do they have a MPLS.____
> 
>         They do it their MPLS network____
> 
>         __ __
> 
>         __ __
> 
>         *From:*AusNOG [mailto:ausnog-bounces at lists.ausnog.net
>         <mailto:ausnog-bounces at lists.ausnog.net>] *On Behalf Of *Nathan
>         Brookfield
>         *Sent:* Friday, 22 April 2016 8:44 AM
>         *To:* ausnog at lists.ausnog.net <mailto:ausnog at lists.ausnog.net>
>         *Subject:* [AusNOG] Telstra using US DOD IP's like they are
>         RFC1918____
> 
>         __ __
> 
>         Morning All,____
> 
>         __ __
> 
>         So I've been asked by a customer to explain a traceroute, after
>         reviewing it and telling them to contact Telstra because the hop
>         count out of the Telstra network is putrid, I noticed something
>         else unusual/concerning:____
> 
>         __ __
> 
>         image001.png____
> 
>         __ __
> 
>         Any idea's on why Telstra are using 30.0.0.0 addresses as if
>         it's RFC1918 private IP space, surely this is the oversight of
>         someone who needs to find a new job.____
> 
>         __ __
> 
>         This IP space belongs to the US Department of Defense.... WTF?____
> 
>         __ __
> 
>         Kindest Regards,____
> 
>         Nathan Brookfield (VK2NAB)____
> 
>          ____
> 
>         Chief Executive Officer____
> 
>         Simtronic Technologies Pty Ltd____
> 
>          ____
> 
>         *Local:* (02) 4749 4949
>         <tel:%2802%29%204749%204949> *|* *Fax:* (02) 4749
>         4950 *|* *Direct:* (02) 4749 4951 <tel:%2802%29%204749%204951>____
> 
>         *Web*: http://www.simtronic.com.au
>         <http://www.simtronic.com.au/> *|* *E-mail*: nathan.brookfield at simtronic.com.au
>         <mailto:nathan.brookfield at simtronic.com.au>____
> 
>          ____
> 
> 
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