Why doesn't "net.ipv6.conf.default.dad_transmits = 0" have an effect for a specific network interface?

Solution Unverified - Updated -

Issue

  • I set "net.ipv6.conf.default.dad_transmits = 0" in /etc/sysctl.conf.
  • I expected that the value of /proc/sys/net/ipv6/conf/eth0/dad_transmits becomes 0 upon the default value, but it was still 1 after reboot.
  • Why was not it reflected?

Environment

Red Hat Enterprise Linux 6

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