interface dummy0
 ipv6 nd suppress-ra
!
interface eth0
 description TWE LAN
 ip address 111.114.233.2/26
 ip ospf message-digest-key 1 md5 hohohoho
 ipv6 nd suppress-ra
!
interface eth1
 description DSLAM LAN
 ipv6 nd suppress-ra
!
interface eth1.20
 ipv6 nd suppress-ra
!

..... ppp interfaces
interface ppp151
!
router ospf
 ospf router-id 10.20.20.169
 redistribute connected
 network 10.20.20.169/32 area 0.0.0.90
 network 111.114.233.0/26 area 0.0.0.90
 area 90 range 111.111.146.0/24
 area 0.0.0.90 authentication message-digest
 area 0.0.0.90 nssa translate-candidate
 distribute-list CHRIS out connected
!
access-list CHRIS permit 111.111.146.0/24
!

route-map CHRIS deny 5
 match ip address prefix-list CHRIS
!
ip forwarding
!
line vty
!