nanog mailing list archives

Re: Where to buy Internet IP addresses


From: "Ricky Beam" <jfbeam () gmail com>
Date: Mon, 04 May 2009 19:23:13 -0400

On Mon, 04 May 2009 18:50:04 -0400, Leo Bicknell <bicknell () ufp org> wrote:
My 12.0(S), 12.4, and IOS-XR boxes are operating quite well with
/112's and /127's on GigE interfaces to each other, on GSR's, 7300's,
and 7200's.  We also use /128's on loopbacks.

Must have been old (very old?) code when I first tried this. 12.4(15)T doesn't seem to care.

But it still doesn't allow transitional addresses:
gw(config-if)#ipv6 address 0::101:101/96
%FastEthernet0/0: Error: ::1.1.1.1/96 is invalid

gw(config-if)#ipv6 address 0::101:101/128
%FastEthernet0/0: Error: ::1.1.1.1/128 is invalid

If I cannot set an IPv4 address like that, the tunnel won't work. DHCPv6 requests end up outside the tunnel. (it's been many months since I messed with it, so the interface isn't in the config anymore, but the IPSEC setup still is :-)) I can send you the packet dumps if you want to scratch your head over it.


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