Package: bind9 Version: 1:9.16.27-1~deb11u1 I've started to upgrading stretch to bullseye, and noticed that bind9 depends on libuv1 (>= 1.4.2) which is rather old. It causes named[22885]: udp.c:229: fatal error: named[22885]: udp.c:229: fatal error: uv_udp_init_ex failed: invalid argument named[22885]: udp.c:229: fatal error: uv_udp_init_ex failed: invalid argument named[22885]: uv_udp_init_ex failed: invalid argument named[22885]: exiting (due to fatal error in library)
...because of old libuv1=1.9.1-3. It's still newer than the recommended 1.4.2 but it's not enough. Please refresh the dependencies of bind9 package with libuv1 (>= 1.40.0-2)