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Thread: Promisc on boot

  1. #1
    Join Date
    Mar 2011

    Question Promisc on boot

    Hello all,

    How do I set an interface to go in promisc mode on boot? I tried putting "up ifconfig wth0 promisc up" in /etc/network/interfaces but it did not work.

  2. #2
    Join Date
    Mar 2011

    Re: Promisc on boot

    Here is the solution to my problem.

    Since my main goal was to:

    • Change the mac address of an interface
    • Change the name of the interface
    • Put the interface in promisc mode

    Here is how I did it with a udev rule:
    SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:00:27:d9:ea:b0", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="WAN", RUN="/bin/bash -c '/sbin/ip link set dev %k address 08:00:27:d9:ea:b1;ifconfig %k promisc'"
    I am not entirely sure this is the best way to do it. I used bash so that I can use two commands instead of the just one that udev seems to allow. Then I used ip (here I think ifconfig would have done the same job) and then ifconfig to put WAN into promisc.

    If you think something could be done better, please advise.

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