Problem with MPLS filtering

Dear group,

I tried to test the mpls filtering feature. Here is my topology . R1.....
R2..... R3 . R1 -> R2 ip 10.1.1.0, R2 -> R3 ip 20.1.1.0.
R1,R2,R3 have loopbacks 1.1.1.1, 2.2.2.2, 3.3.3.3. I want only the
loopbacks to be learned from ldp.

my configuration.

access-list 1 permit 1.1.1.0 0.0.0.255
access-list 1 permit 2.2.2.0 0.0.0.255
access-list 1 permit 3.3.3.0 0.0.0.255

no mpls ldp advertise-labels
mpls ldp advertise-labels for 1

R1#clear mpls ldp neighbor 2.2.2.2

R1(config)#do sh mpls for

Local Outgoing Prefix Bytes tag Outgoing Next Hop
tag tag or VC or Tunnel Id switched interface
16 Untagged 2.2.2.2/32 0 Fa0/0 10.1.1.2
17 17 3.3.3.3/32 0 Fa0/0
10.1.1.2
18 Untagged 20.1.1.0/24 0 Fa0/0 10.1.1.2

still i am getting the 20.1.1.0 which is one of the denied ip addresses.
... am I missing sth ?

-- 
smith
Blogs and organic groups at http://www.ccie.net