[squid-users] acl "clientside_mark" problem

[morteza omidian]

Hi
why anybody don't answer me? Please help!
I compiled Squid 4.3 with this options in linux server:                    ./configure   --enable-linux-netfilter  --enable-zph-qos 
when i change my squid configuration file and add this line "acl MY_CLIENTs clientside_mark 0x1" I got  error messages like this:
root at linux:~# /usr/local/squid/sbin/squid -k restart
2018/10/16 09:33:42| FATAL: Invalid ACL type 'clientside_mark'2018/10/16 09:33:42| FATAL: Bungled /usr/local/squid/etc/squid.conf line 5: acl CLIENT clientside_mark 12018/10/16 09:33:42| Squid Cache (Version 4.3): Terminated abnormally.CPU Usage: 0.025 seconds = 0.017 user + 0.008 sysMaximum Resident Size: 38592 KBPage faults with physical i/o: 0
What is wrong with my configuration??What should  i do?
Tanx
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