On Thu, Mar 18, 2010 at 09:34:47AM -0700, Fred Baker wrote: > Are they using them only within their domain(s), and ARIN addresses outside, > or are they advertising them to their upstream(s) to be readvertised into the > backbone? > > If they are using them internally and NAT'ing to the outside, they're not > hurting themselves or anyone else. I would personally let them alone. > Right up until someone actually starts *using* 1/8, in which case they're hurting both themslves, and who ever gets stuck with it.
> If they are advertising them outside, it adds a small prefix in the ARIN > domain that doesn't get aggregated by the upstream. Among 300K such prefixes > it is probably noise, but gently suggesting that they use something > aggregatable into their upstream's allocation would help a little bit in that > regard. What they are most likely hurting is themselves, really; a datagram > sent to the address from an ISP outside themselves probably travels via > Australia or an Australian ISP. > > On Mar 18, 2010, at 8:52 AM, Jaren Angerbauer wrote: > > > Hi all, > > > > I have a client here in the US, that I just discovered is using a host > > of private IPs that (as I understand) belong to APNIC (i.e. > > 1.7.154.70, 1.7.154.00-99, etc.) for their web servers. I'm assuming > > that the addresses probably nat to a [US] public IP. I'm not familiar > > enough with the use of private address space outside of ARIN (i.e. > > 192.0.0.0, 10.0.0.0, etc) but I figure if their sites are up and > > accessible it must be working for them. I'm just wondering if there > > is any recommendation or practice around this -- using private IP > > ranges from another country. Thanks. > > > > --Jaren > > > > http://www.ipinc.net/IPv4.GIF > > > -- --
