RU evidently hijacked UA netblock

Scott Weeks surfer at mauigateway.com
Sat Mar 5 02:46:47 UTC 2022


--- jay at west.net wrote:
On 3/4/22 18:03, Scott Weeks wrote:

> It looks like a 'too many' AS prepends, but it is only 250 prepends.

In most reasonable scenarios I'd say that this qualifies as too many.
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Yeah, technically, but it was not 256 or something where I'd expect an issue to happen.  Just curious as to why only that ASN caused the buffer overflow messages as I got them from no other AS ever and wondered if anyone else has seen them.  Other ASNs almost certainly have sent 250+ prepends to me before, but they did not cause the overflow.  Like I said, I have a ticket open because I am curious:

BGP-WARNING-tBgp4RouteInvalid-2007 <stuff> Route invalid reason - Cannot add/prepend AS-path.  Buffer overflow\nNRLI - <prefix>  where prefixes are several and different lengths.

Probably nothing, but I always look into stuff I see in the syslog server's router.log.

scott


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