[c-nsp] multiple OAM loopback replies

[Christopher Hunt]

I'm having trouble with one of our subscriber ADSL lines and I'm seeing 
duplicate OAM replies on their PVC. Anyone know what might cause this? 
OAM cells drop (and then IP drops too) when line is under load (>3kbps). 
Here's the debug atm oam interface atm3/0.6208 output:

Jul 23 15:31:29.514 PDT: ATM OAM(ATM3/0.6208): Timer: VCD#1483 VC 6/208 
Status:2 CTag:0x153 Tries:0
Jul 23 15:31:29.514 PDT: ATM OAM LOOP(ATM3/0.6208) O: VCD#1483 VC 6/208 
CTag:0x154
Jul 23 15:31:29.522 PDT: ATM OAM LOOP(ATM3/0) I: VCD#1483 VC 6/208 
LoopInd:0 CTag:0x154 OAM Cell Type 5
Jul 23 15:31:29.534 PDT: ATM OAM LOOP(ATM3/0) I: VCD#1483 VC 6/208 
LoopInd:0 CTag:0x154 OAM Cell Type 5
Jul 23 15:31:29.546 PDT: ATM OAM LOOP(ATM3/0) I: VCD#1483 VC 6/208 
LoopInd:0 CTag:0x154 OAM Cell Type 5
Jul 23 15:31:29.634 PDT: ATM OAM LOOP(ATM3/0) I: VCD#1483 VC 6/208 
LoopInd:0 CTag:0x154 OAM Cell Type 5

-Chris