One more thing about config, u dont need to do
acl is_msn01 hdr_sub(X-Forwarded-For) 64.4.0
acl is_msn02 hdr_sub(X-Forwarded-For) 64.4.1
acl is_msn03 hdr_sub(X-Forwarded-For) 64.4.2
and then
use_backend robot_traffic if is_msn01 or is_msn02 or is_msn03
u can just do
acl is_msn hdr_sub(X-Forwarded-For) 64.4.0
acl is_msn hdr_sub(X-Forwarded-For) 64.4.1
acl is_msn hdr_sub(X-Forwarded-For) 64.4.2
and then
use_backend robot_traffic if is_msn
ACLs with same name are automatically ORed together.
or better yet, match bots by user-agent not by IP
http://www.useragentstring.com/pages/useragentstring.php
