#11 more information for --as-path-lookups

[ssdfdsfw2e2ef23]

It would be nice to have more information on --as-path-lookups in man page, basically take the ASN information with a grain of salt

• Current implementation uses RADB information, no warning when conflict information exists in different routing registires
• Routing registry data may not be consistent with actual origin ASN
• address (route) may be originated by different ASNs at the same time, no warning available