Changes since 9.4.2-P1:

--- 9.4.2-P2 released ---

2406.  [bug]          Some operating systems have FD_SETSIZE set to a
low value by default, which can cause resource
exhaustion when many simultaneous connections are
open.  Linux in particular makes it difficult to
increase this value.  To use more sockets with
select(), set ISC_SOCKET_FDSETSIZE.  Example:
STD_CDEFINES="-DISC_SOCKET_FDSETSIZE=4096" ./configure
(This should not be necessary in most cases, and
never for an authoritative-only server.) [RT #18328]

2404. [port] hpux: files unlimited support.

2403. [bug] TSIG context leak. [RT #18341]

2402. [port] Support Solaris 2.11 and over. [RT #18362]

2401. [bug] Expect to get E[MN]FILE errno internal_accept()
(from accept() or fcntl() system calls). [RT #18358]

2399. [bug] Abort timeout queries to reduce the number of open
UDP sockets. [RT #18367]

2398. [bug]          Improve file descriptor management.  New,
temporary, named.conf option reserved-sockets,
default 512. [RT #18344]

2396. [bug] Don't set SO_REUSEADDR for randomized ports.
[RT #18336]

2395. [port] Avoid warning and no effect from "files unlimited"
on Linux when running as root. [RT #18335]

2394. [bug] Default configuration options set the limit for
open files to 'unlimited' as described in the
documentation. [RT #18331]

2392. [bug] remove 'grep -q' from acl test script, some platforms
don't support it. [RT #18253]

2322. [port] MacOS: work around the limitation of setrlimit()
for RLIMIT_NOFILE. [RT #17526]

(adrianp)