frontend FOO_FRONT_80
    bind            5.5.5.5:80 name 5.5.5.5:80  transparent
    mode            tcp
    log             global
    maxconn         10000
    timeout client  30000
    use_backend FOO_BACK_80



backend FOO_BACK_80
    mode            tcp
    log             global
    option          log-health-checks
    balance         source
    timeout connect 30000
    timeout server  30000
    retries         3
    source ipv4@ usesrc clientip
    server          FOO_LB_001 10.0.0.21:80 check inter 10000  weight 100
    server          FOO_LB_002 10.0.0.22:80 check inter 10000  weight 100