2001:400::/29

itojun@iijlab.net itojun@iijlab.net
Fri, 19 Oct 2001 17:14:02 +0900


	we (AS2500) are seeing 2001:400::/29 advertised from the following AS
	path:
		4554 3748 4755
	is it for real?   did RIR assigned /29 to AS4755?

	I don't think it correct, since:
	- http://www.dfn.de/service/ipv6/ipv6aggis.html does not list it
	- 2001:400::/35 is advertised from different origin AS (AS293)
	- AS4755 is advertising other prefixes too, and it seems to me that
	  AS4755 is authoritative for 3ffe:81e0::/28 only
	  3ffe:81d0::/28 - advertised by AS6939 too
	  3ffe:81e0::/28 - advertised by AS4755 only

	btw, http://www.dfn.de/service/ipv6/ipv6aggis.html do list a /29 prefix,
	which is not advertised yet.
	EU-ZZ-2001-07F8                2001:07F8::/29

itojun



*  2001:400::/29    2001:200:0:1800::3549:1
                                                           0 3549 6175 10566 475
5 i
*>i                 fec0::4401:0:0:1:1
                                             1    100      0 4554 3748 4755 i
*  2001:400::/35    2001:200:0:1800::4691:1
                                                           0 4691 2497 293 i
* i                 fec0::4401:0:0:1:1
                                             1    100      0 4554 293 i
*                   2001:200:0:1800::2497:1
                                                           0 2497 293 i
*>                  2001:200:0:1800:200:f8ff:fe1f:7490
                                                           0 4697 293 i
*                   2001:200:0:1800::2497:0
                                                           0 3549 2497 293 i
*                   2001:200:0:1800::2497:1
                                                           0 4725 2497 293 i
* i                 fec0::1802:0:0:1:7
                                                  100      0 3425 293 i