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BGP unsupported capability code
If A tries to peer with B, and B sends a BGP capability 64 to A, if A does not support that capability what would proper and/or reasonable behavior for A be?
(a "published" source for it, if you could possibly do so.)
unsupported capability code 64 lengh 6
## 2006-08-17 19:17:05 : [bgp/stack]: send NOTIFICATION msg code (Open-Error)
subcode(Open Message Error: Unsupported Capability) to peer w9.x4.y7.z9 via socket 415
b) ignore it
c) admin defined
rfc3392.txt only appears to address the case where if A tries to peer with B, and B sends a BGP capability 64 to A, if A does not support that capability, B MAY terminate the connection with the above notification.
(section 3 paragraph 5)