[Bug 700492] Re: ntp complains about ipv6 errors every 5 minutes

[Ludovico Cavedon]

I am currently having this issue, but it might not be an ntp bug, but
rather a kernel bug.

If you assign an IPv6 address to a virtual device composed of real sub-devices (e.g. to a bonding or bridge interface), the address will be wrongly detected as duplicate (marked as "tentative dadfailed"). See
https://bugzilla.redhat.com/show_bug.cgi?id=503082

And this triggers the ntp messages because apparently ntp tries and
fails to bind to the interface with the problematic address.

My workaround to this issue was not assigning an IPv6 address to my
bridge interface (I realized that it was not really needed in my case).

** Bug watch added: Red Hat Bugzilla #503082
   https://bugzilla.redhat.com/show_bug.cgi?id=503082

** Changed in: ntp (Ubuntu)
       Status: Incomplete => New

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https://bugs.launchpad.net/bugs/700492

Title:
  ntp complains about ipv6 errors every 5 minutes