53176ca91d
After running dhclient -6 we expect the DHCPv6 assigned address to be immediately usable. That's true with the Fedora dhclient-script (and the upstream ISC DHCP one), however it's not true with the Debian dhclient-script. The Debian script can complete with the address still in "tentative" state, and the address won't be usable until Duplicate Address Detection (DAD) completes. That's arguably a bug in Debian (see link below), but for the time being we need to work around it anyway. We usually get away with this, because by the time we do anything where the address matters, DAD has completed. However, it's not robust, so we should explicitly wait for DAD to complete when we get an DHCPv6 address. Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1085231 Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com> |
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