BGP: AS private number check

[Arvin Gan]

Hi  All,
    According to RFC1930, the AS number 64512 to 65535  are reserved for 
private,  I cannot find the implementation for  checking  private AS number in 
BIRD, anybody know it or it's lost in BGP ?

RFC1930
10<https://tools.ietf.org/html/rfc1930.html#section-10>. Reserved AS Numbers





   The Internet Assigned Numbers Authority (IANA) has reserved the

   following block of AS numbers for private use (not to be advertised

   on the global Internet):



                           64512 through 65535

Thanks
Arvin