сделал
route-map map-AS42754-in permit 200
description -- permit any else, set default loc-pref, set community
set community 2432:42754
set local-preference 200route-map map-AS34034-in permit 200
description -- permit any else, set default loc-pref, set community
set community 2432:34034
set local-preference 100
show ip bgp
BGP table version is 0, local router ID is 91.216.48.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, R Removed
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 0.0.0.0 3.3.3.3 100 1000 34034 8905 i
* 1.0.0.0/24 3.3.3.3 100 1000 34034 15169 i
*> 4.4.4.4 200 2000 42754 15169 i
* 1.0.4.0/22 3.3.3.3 100 1000 34034 3327 6939 9482 38803 56203 56203 56203 i
*> 4.4.4.4 200 2000 42754 28968 3356 4323 7545 7545 7545 7545 56203 i
* 1.0.16.0/23 3.3.3.3 100 1000 34034 3327 9002 2519 i
*> 4.4.4.4 200 2000 42754 28968 1299 2914 2519 i
* 1.0.18.0/23 3.3.3.3 100 1000 34034 3327 9002 2519 i
*> 4.4.4.4 200 2000 42754 28968 1299 2914 2519 i
* 1.0.20.0/23 3.3.3.3 100 1000 34034 3327 9002 2519 i
*>
в итоге трафик входящий идет через as 34034 по маршруту
*> 0.0.0.0 3.3.3.3 100 1000 34034 8905 i
хотя в конфиге стоит запрет на получение шлюза по умолчанию
ip prefix-list map-AS34034-in seq 5 deny 0.0.0.0/0
ip prefix-list map-AS34034-in seq 25 permit any
ip prefix-list map-AS42754-in seq 5 deny 0.0.0.0/0
ip prefix-list map-AS42754-in seq 25 permit any