socket.c:4524: unexpected error in BIND 9.4.3 P3

[Le Vu]

Hi,
I have updated BIND from 9.4.2-P2 to 9.4.3-P3 to mitigate the Dynamic Update
DOS attack. I have noted a lot of errors from socket.c (which I have never
seen before with v9.4.2)

Jul 30 06:25:18 DNS1 named[25555]: socket.c:4524: unexpected error:
Jul 30 06:25:18 DNS1 named[25555]: 22/Invalid argument

There are also some of these errors:
Jul 30 07:26:17 DNS1 named[25555]: sockmgr 0xb7f05008: maximum number of FD
events (64) received

BIND is compiled with following option on Centos 5.3 (another machine with
RHEL 4.4 has these error too):
./configure --disable-openssl-version-check --with-openssl=no

What should I do:
- go back to 9.4.2-P2 and use iptables to filter DNS update packet
- use another version of BIND
- ignore the error

Is anybody else experiencing this problem?

Many thanks,

Vu
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