[Networker] Directive to exclude a single directory

Sounds simple, and I've done it before, but this time it isn't doing the 
job.

On a particular Solaris 10 x86 box, I want to exclude the /system (meta) 
directory tree from backups. I first customized the standard "Unix with 
compression" server-side directive it's using to include :

<< /system >>
        skip: .?* *

...but still see this in the completion reports :

* <client>:/system/object save: readdir overflow error, backup of 
directory cannot continue
* <client>:/system/object save: readdir overflow error, backup of 
directory cannot continue
* <client>:/system/object save: readdir overflow error, backup of 
directory cannot continue

...etc. for hundreds of lines. So, I added this to the top of the 
directive, hoping it would prevent Networker from even attempting to read 
the directory :

<< / >>
        skip: tmp_mnt
        +skip: core
        +skip: system
        +compressasm: .

"+skip: system" is the new line. However, it still apparently attempts to 
read /system. Is a client-side directive needed, or will it even make any 
difference? What am I overlooking?

Thanks.

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