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Named failed to check the opcode of responses when performing zone refreshes, stub zone updates, and UPDATE forwarding. This could lead to an assertion failure under certain conditions and has been addressed by rejecting responses whose opcode does not match the expected value. [GL #2762] For details, see the release notes: https://downloads.isc.org/isc/bind9/9.11.35/RELEASE-NOTES-bind-9.11.35.html Signed-off-by: Petr Vorel <petr.vorel@gmail.com> Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr> (cherry picked from commit 6977ee6e0ecf9cc9b24e5f41f9598f22fd0fcaf3) Signed-off-by: Peter Korsgaard <peter@korsgaard.com>