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  1. #1

    Multicast forwarding


    I have a Ubuntu 7.1 box with 2 ethernet interface. I want to enable multicast forwarding. So I tried following with root account:
    echo 1 > /proc/sys/net/ipv4/conf/all/mc_forwarding
    echo 1 > /proc/sys/net/ipv4/conf/eth0/mc_forwarding
    echo 1 > /proc/sys/net/ipv4/conf/eth1/mc_forwarding

    But always gor permission denied.
    I also tried with sysctl and got same thing.

    I was able to do the following though:
    echo 1 > /proc/sys/net/ipv4/ip_forwarding

    Any reason? TIA

  2. #2
    I just noticed /proc/sys/net/ipv4/conf/all/mc_forwarding is read only. But adding write privilieage under root still failed with permission denied.

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