v9_16_6_filter-a_1

Build for x86_64:
./configure --build=x86_64-linux-gnu --prefix=/usr --includedir=/usr/include --mandir=/usr/share/man --infodir=/usr/share/info --sysconfdir=/etc --localstatedir=/var --disable-option-checking --libdir=/usr/lib/x86_64-linux-gnu --disable-maintainer-mode --libdir=/usr/lib/x86_64-linux-gnu --sysconfdir=/etc/bind --with-python=python3 --localstatedir=/ --enable-largefile --with-libtool --enable-shared --enable-static --with-openssl=/usr --with-gssapi=/usr --with-libidn2 --with-json-c --with-lmdb=/usr --with-gnu-ld --with-maxminddb --disable-native-pkcs11 build_alias=x86_64-linux-gnu CFLAGS="-g -O2 -fdebug-prefix-map=/build/bind9-kiBnEq/bind9-9.16.6=. -fstack-protector-strong -Wformat -Werror=format-security -fno-strict-aliasing -fno-delete-null-pointer-checks -DNO_VERSION_DATE -DDIG_SIGCHASE" LDFLAGS="-Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now" CPPFLAGS="-Wdate-time -D_FORTIFY_SOURCE=2"