Bridging + VLANS

Ian Smith smithi at nimnet.asn.au
Sun May 22 10:19:13 UTC 2011


On Sat, 21 May 2011, Doug Barton wrote:
 > On 05/21/2011 01:58, Matthew Bowman wrote:
 > > I have an uplink to my ISP on a 2 IP /30 network (1.1.1.0/30 in the
 > > diagram)
 > 
 > No help for your actual problem, sorry. I just wanted to point out that 1/8
 > has been assigned by IANA to APNIC, so it should not be used as a substitute
 > for RFC 1918 space. I'm assuming that you're just using it as a placeholder
 > for the real assignment, however I would argue that even that is a bad idea
 > since at minimum it's a bad example that others may draw poor conclusions
 > from.

I was concerned about this too after noticing 1.x.x.x connections to our 
streamserver, knowing the ancient Linux firewall/router forces 1.1.1.1 
as the address of the interface used for PPPoE - I guess that was common 
usage back when? - but see the APNIC bods are onto it, also noting that 
1.0/16 and many/most 1.1 (other than 1.1.1/24) are already allocated:

http://www.iptools.com/dnstools.php?tool=ipwhois&user_data=1.1.1.1&submit=Go

Just as well, as I had to address the ADSL bridge within 1.1.1/24 ..

 > Yours in pedantry,
 > 
 > Doug

254 out of 256 ain't bad,

Ian


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