'Cisco log: Missing cef table for tableid 65535 during CEF samecable event'


Today I've noticed some strange error on my Cisco 1841 router :

    %FIB-4-FIBCBLK: Missing cef table for tableid 65535 during CEF samecable event

After searching the net, i've found some Cisco bug that describes this.

    "FIB-4-FIBCBLK errors with dns view 
    Symptoms
    Message "%FIB-4-FIBCBLK: Missing cef table for tableid 65535 during CEF samecable event" displayed on the console logs.
    Conditions
    The message seems to be generated anytime a dns request is made to the router where the router then has to use the dns forwarder
    Workaround
    No workaround"
([Source](http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsx53968))

This happens when you have DNS server on the device and it needs to grab the answer from the device configured DNS server (A.K.A DNS Forwarder), and each request will cause this error log.

According to Cisco, the affected device list does not include my MD release - 12.4(25b), however i do see it . (List)

List of IOS with the Fix :

    12.2(33)XNE
    12.4(24.6)T1
    12.4(15)T9
    12.2(32.8.11)SR183
    12.2(32.8.1)REC186
    12.4(20)T3
    12.2(33.1.3)MCP5
    15.0(1)M
    12.4(24)T1
    12.2(32.8.1)REE186
    12.4(22)T2
    12.4(22)MDA1
    12.4(24)YG
    12.4(24)GC1
    12.4(22)XR
    12.4(24)MD
    12.4(22)YE2