🚀 go-pugleaf

I see in your message you are running 8.1(19), there was a problem
with access-lists in that release. Here is the notice we sent to the
Newsgroup at that time:  Release 8.1(25) and later corrected the below
problem. We are now on releases 8.3(3) and 9.0(1).

Keep in mind access-lists are looked at after the routing decision is
made and on the interface the packet would go out. A packet comes in
from the serial line get routed to an ethernet and then any
access-list that is defined on the ethernet gets evaluated.

Regards,
John Wright
Customer Engineering
cisco Systems, Inc.


Date: Fri, 26 Oct 90 10:43:44 -0700
From: Joel P. Bion <jpbion@cisco.com>
To: cisco@spot.Colorado.EDU
Subject: Bug in IP Fast switching/access lists...

Hello.

        cisco Systems has recently uncovered a bug in the use of IP access
lists and IP fast switching with the 8.1(19)-8.1(21) releases. This problem
has been fixed in 8.2 development code, and will also be included in the
next GS maintenance release, currently scheduled for November 12th.

        The conditions under which the problem is seen are complex,
but the result is that access would (to the end user) apparently be
"randomly" granted or denied.  Your  safest insurance is to simply
DISABLE fast switching on all interfaces to which an IP access list
is applied. For example, to disable fast switching on interface ethernet 0,
issue the following configuration commands:

        interface ethernet 0
        no ip route-cache

        A mailing will be sent to this list indicating when the next 8.1
maintenance is available to fix this problem.


Thank you,

        Joel Bion
        Manager, cisco Customer Engineering