To clarify, for the sake of the archives - as this question seems to get
raised all the time.

You can't 'advertise' (make available to other internet users) 192.168.x.x
space (or any other addresses within the spaces defined by RFC1918 - 10/8,
a segment of the 172.16/16 and the 192.168/16 networks.

Thats not to say you cant use them to connect two hosts.
As long as its dealt with *locally* it can be used all you like.
Which is why if you have a Router which uses 192.168 internally, you can
traceroute from behind it over multiple RFC1918 addresses before
traversing to the Internet and the route is fine.

What it means in the below example is that 210.55.64.32 and 202.50.245.9
obviously both have connectivity to the 192.168.253.225 router/device and
have static routes (not routes advertised via BGP or similar) to get to
eachother.

Multiple hop routes tend to operate 'one hop at a time', so if you think
of it that way, theres a number of circumstances that could have traffic
forwarding through RFC1918 address space.

Mark.

(Comments IMHO, etc)

On Sun, 19 Sep 2004, Lennon - Orcon wrote:

> There is nothing wrong with 192.168.253.225 being in the trace.
>
> The Latency between hops 4 and 5 is a "problem" yes which you should contact
> your ISP and get them to contact Telecom for them to fix.
>
> Thanks
> Craig
> ----- Original Message -----
> From: "Graham Vincent" <graham@gpv.co.nz>
> To: <adsl@lists.unixathome.org>
> Sent: Sunday, September 19, 2004 3:20 PM
> Subject: poor ping and an illegal IP address
>
>
> > Hello.
> >
> > Major complaint today from my son who tells me his ping is so bad he can't
> > play a decent game of UT2004.
> >
> > I ran a traceroute for him:
> >
> >> Tracing route to tribes2.games.xtra.co.nz [203.96.92.75]
> >> over a maximum of 30 hops:
> >> 1 <1 ms <1 ms <1 ms fred [192.168.10.40] 2 * *
> >> * Request timed out.
> >> 3 48 ms 49 ms 49 ms 210-55-64-32.adsl.netgate.net.nz
> >> [210.55.64.32] 4 48 ms 47 ms 47 ms 192.168.253.225 5 *
> >> 240 ms 247 ms 202.50.245.9 6 240 ms 209 ms 201 ms
> >> A5-0-0-19.akcr5.global-gateway.net.nz [202.50.245.105] 7 187 ms 249
> >> ms 257 ms vlan-6.aksw7.global-gateway.net.nz [202.37.246.21] 8 233
> >> ms 217 ms 225 ms 203.96.120.146 9 208 ms 241 ms 248 ms
> >> tribes2.games.xtra.co.nz [203.96.92.75] Trace complete.
> >
> > Hop 4 looks interesting - Isn't that an illegal address for use in the
> > wicked outside world? And the 200ms delay from hop 4 to 5 certainly looks
> > like the cause of most of the lag to the game server.
> >
> > Any ideas?
> >
> > Thanks,
> >
> > Graham
> >
> > --
> > This message is part of the NZ ADSL mailing list. see
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> > adsl" in the body of the message
> >
> >
>
> --
> This message is part of the NZ ADSL mailing list.
> see http://unixathome.org/adsl/ for archives, FAQ,
> and various documents.
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>

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