log file ldpd.log
!
hostname rt2
!
! debug mpls ldp messages recv
! debug mpls ldp messages sent
! debug mpls ldp zebra
!
mpls ldp
 router-id 10.0.255.2
 dual-stack transport-connection prefer ipv4
 !
 address-family ipv4
  label local allocate host-routes
  discovery targeted-hello accept
  discovery transport-address 10.0.255.2
  !
  interface eth-rt1
  interface eth-rt4
  !
 !
 address-family ipv6
  label local allocate host-routes
  discovery transport-address 2001:db8::2
  !
  interface eth-rt1
  interface eth-rt4
  !
 !
!