Broken persistance
From Tech-Wiki
when HTTP_REQUEST { set pserver [persist lookup uie [HTTP::cookie PersistCookie]] if { [LB::status pool http_pool member $pserver 80] eq "up" } { pool http_pool member $pserver 80 } else { log "Persist server $pserver:80 down! Redirecting" HTTP::redirect "http://server.domain.com/BrokenPersistence.html" } }