BGP AS-Path_Attribute

R4
ip prefix-list 100 seq 5 permit 4.4.4.0/24
route-map PREPEND permit 10
match ip address prefix-list 100
set as-path prepend 40 40 40
route-map PREPEND permit 999

router bgp 40
nei 10.1.24.2 route-map PREPEND out

#sh ip bgp on R3