1 Reply Latest reply on Jun 7, 2017 6:08 AM by alkx

    How to persist Private flags for an interface


      Hi All,

      We have a requirement to turn ON "disable_mc_loopback" private flag for an interface. I could do the same by using below command,

      ethtool --set-priv-flags <interface>  disable_mc_loopback on


      However the configuration does not persist reboot. Is their a way to persist the above configuration?

      We are using the following Ethernet Controller - Mellanox Technologies MT27500/MT27520 Family [ConnectX-3/ConnectX-3 Pro Virtual Function]

        • Re: How to persist Private flags for an interface

          Use ifcfg-<IFS> file and specify ETHTOOL_OPTS parameter.

          $cd /etc/sysconfig/network-scripts

          $:/etc/sysconfig/network-scripts/>grep ETHTOOL *

          network-functions:    [ -n "${ETHTOOL_DELAY}" ] && /bin/usleep ${ETHTOOL_DELAY}

          network-functions:    for opts in $ETHTOOL_OPTS ; do



          The instructions above applicable for RedHat/CentOS. For the other distributions, need to use similar way and add call to 'ethtool' from interface startup script. For additional details, contact your OS vendor.