a52cdb354d13 dns: validate IPv4 record addresses
b798c24205b5 dns: validate IPv6 record addresses
a3dcb4adc635 dns: validate reverse dns query name lengths
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
(cherry picked from commit 8a7eb57ab8366045d7e1470c003827391e37684b)
(cherry picked from commit 68befe26ac033d7817014ff014e8eedc4c701360)