UPDATE Packing
BGP would pack one NLRI per update unless “set metric” was configured in an outbound route-map
CSCdt81280 - BGP: Misc fixes for update-generation – 12.0(16.6)S
CSCdv52271 - BGP update packing suffers with confederation peers – 12.0(19.5)S
Same fix but CSCdt81280 is for regular iBGP and CSCdv52271 is for confed peers