[SQU] WCCP with IOS 12.1

Hi

Racking my brain trying to get WCCP going with a router that's running IOS
12.1(5) on a 3640..

Squid Cache: Version 2.3.STABLE3 on linux 2.2.17.

This setup worked fine on 12.0(7)T, and broke around the time of the IOS
upgrade, so I'm guessing the IOS has at least something to do with it.

Here's what I see with debug ip wccp events & debug ip wccp packets

1d03h: %WCCP-5-CACHEFOUND: Web Cache 1.2.3.4 acquired
1d03h: WCCP-PKT: Sending I_See_You packet to 1.2.3.4 w/ rcvd_id 00000022
1d03h: WCCP-EVNT: Here_I_Am packet from 1.2.3.4 w/bad rcvd_id 00000000
1d03h: WCCP-PKT: Sending I_See_You packet to 1.2.3.4 w/ rcvd_id 00000023
1d03h: WCCP-EVNT: Here_I_Am packet from 1.2.3.4 w/bad rcvd_id 00000000
1d03h: WCCP-PKT: Sending I_See_You packet to 1.2.3.4 w/ rcvd_id 00000024
1d03h: %WCCP-5-CACHEFOUND: Web Cache 1.2.3.4 acquired
1d03h: WCCP-PKT: Sending I_See_You packet to 1.2.3.4 w/ rcvd_id 00000025
1d03h: WCCP-EVNT: Here_I_Am packet from 1.2.3.4 w/bad rcvd_id 00000000
1d03h: WCCP-PKT: Sending I_See_You packet to 1.2.3.4 w/ rcvd_id 00000026
1d03h: WCCP-EVNT: Here_I_Am packet from 1.2.3.4 w/bad rcvd_id 00000000
1d03h: WCCP-PKT: Sending I_See_You packet to 1.2.3.4 w/ rcvd_id 00000027
1d03h: WCCP-EVNT: Here_I_Am packet from 1.2.3.4 w/bad rcvd_id 00000000
1d03h: WCCP-PKT: Sending I_See_You packet to 1.2.3.4 w/ rcvd_id 00000028
1d03h: %WCCP-5-CACHEFOUND: Web Cache 1.2.3.4 acquired

And around and around it goes, never actually picking up the cache.

The "w/bad rcvd_id 00000000" is what's got my eye..

According to
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121sup/121de
bug/dbdippim.htm

<quote>
Each keepalive packet has an identification number associated with it. When
the Cisco Cache Engine receives a keepalive packet from the router, it sends
a reply with the identification number back to the router.
</quote>

Looks like squid doesn't do the above (at least for me..)

Have I missed a patch or something?

Thanks

Ian

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