12 Jun
2016
12 Jun
'16
10:06 p.m.
On 12/Jun/16 21:24, Sergey wrote:
Hi,
Looking at the BGP table I see stuff like this, not even /64:
2001:218:2000:5000::3a0/126 *[BGP/170] 2d 08:02:02, localpref 180 AS path: 12714 31133 3491 10026 I, validation-state: unverified > to 2a00:d18:fe03:fefe:a76d::1 via ae2.3386
As we can see this wasn't rejected by 3 AS-es.
AFAIK, the minimum allocated space from RIRs is /48. Should we filter prefixes longer than this?
Yes. A lot of service providers have poor filtering habits, accepting IPv4 prefixes as long as /32, IPv6 prefixes as long as /128, and reserved address space that should not be visible on the Internet. Do yourself a solid and filter. Mark.