Why is this router passing broadcasts?

[jkeeffe]

I have a 7206 with IOS 12.2(21a), that is passing broadcast. I can see this when I look at the ip cache flow table as shown below:

ROC-INET-3640#sh ip cache flow | include 169.254

Fa0/1 169.254.86.170 Fa0/0 169.254.255.255 11 008A 008A 1

Directed broadcasts are disabled by default on this router as shown and there is no IP helper address applied, nor are there any IP forward-protocol statements:

ROC-INET-3640#sh ip int f0/1

FastEthernet0/1 is up, line protocol is up

Internet address is 164.72.52.135/25

Broadcast address is 255.255.255.255

Address determined by non-volatile memory

MTU is 1500 bytes

Helper address is not set

Directed broadcast forwarding is disabled

ROC-INET-3640#sh ip int f0/0

FastEthernet0/0 is up, line protocol is up

Internet address is 164.72.100.129/25

Broadcast address is 255.255.255.255

Address determined by non-volatile memory

MTU is 1500 bytes

Helper address is not set

Directed broadcast forwarding is disabled

So why is this router passing the 169.254.255.255 broadcasts from F0/1 to F0/0?

[owillins]

I guess this could be a caching issue. If that entry gets stuck in the cache then it'll never see the directed broadcast code on the interface. You can clear the cache and check if it solves the broadcast problem.