tests/topotests/bgp_set_local-preference_add_subtract/r2/bgpd.conf

   1 router bgp 65000
   2   no bgp ebgp-requires-policy
   3   neighbor 192.168.255.1 remote-as 65000
   4   neighbor 192.168.255.1 timers 3 10
   5   address-family ipv4
   6     redistribute connected
   7     neighbor 192.168.255.1 route-map r1-out out
   8   exit-address-family
   9 !
  10 route-map r1-out permit 10
  11   set local-preference +50