bind security: warning

[kebba.foon at qcell.gm]

Dear list
am using BIND 9.5.1-P3 recently am been have lots of issues with my cache
server. at one point it was not resolving any queries. please help, this
is the log that keeps showing up on my server,

04-Jun-2010 19:20:47.200 security: warning: client 41.223.214.27#8222: RFC
1918 response from Internet for 105.1.168.192.in-addr.arpa
04-Jun-2010 19:20:50.279 security: warning: client 196.46.233.8#34578: RFC
1918 response from Internet for 22.81.168.192.in-addr.arpa
04-Jun-2010 19:20:52.196 security: warning: client 41.223.214.25#6394: RFC
1918 response from Internet for 100.1.168.192.in-addr.arpa
04-Jun-2010 19:20:52.820 security: warning: client 196.46.233.8#34578: RFC
1918 response from Internet for 6.81.168.192.in-addr.arpa
04-Jun-2010 19:20:53.226 security: warning: client 196.46.239.37#49803:
RFC 1918 response from Internet for 107.1.168.192.in-addr.arpa
04-Jun-2010 19:20:54.403 security: warning: client 196.46.233.8#34578: RFC
1918 response from Internet for 49.81.168.192.in-addr.arpa
04-Jun-2010 19:21:02.701 security: warning: client 196.46.233.8#34578: RFC
1918 response from Internet for 46.81.168.192.in-addr.arpa
04-Jun-2010 19:21:06.560 security: warning: client 196.46.233.8#34578: RFC
1918 response from Internet for 19.81.168.192.in-addr.arpa
04-Jun-2010 19:21:09.455 security: warning: client 196.46.233.8#34578: RFC
1918 response from Internet for 65.81.168.192.in-addr.arpa
04-Jun-2010 19:21:12.939 security: warning: client 196.46.235.46#64502:
RFC 1918 response from Internet for 1.0.168.192.in-addr.arpa
04-Jun-2010 19:21:39.691 security: warning: client 41.223.214.26#17391:
RFC 1918 response from Internet for 54.2.225.10.in-addr.arpa
04-Jun-2010 19:21:55.762 security: warning: client 196.46.239.37#49803:
RFC 1918 response from Internet for 107.1.168.192.in-addr.arpa
04-Jun-2010 19:22:06.800 security: warning: client 196.46.233.8#34578: RFC
1918 response from Internet for 19.81.168.192.in-addr.arpa
04-Jun-2010 19:22:14.439 security: warning: client 41.223.214.27#8436: RFC
1918 response from Internet for 34.3.225.10.in-addr.arpa
04-Jun-2010 19:22:16.639 security: warning: client 196.46.233.8#63154: RFC
1918 response from Internet for 38.81.168.192.in-addr.arpa
04-Jun-2010 19:22:19.387 security: warning: client 41.223.214.25#6394: RFC
1918 response from Internet for 102.1.168.192.in-addr.arpa
04-Jun-2010 19:22:19.810 security: warning: client 196.46.233.8#34578: RFC
1918 response from Internet for 6.81.168.192.in-addr.arpa
04-Jun-2010 19:22:19.992 security: warning: client 196.46.239.7#51996: RFC
1918 response from Internet for 100.1.168.192.in-addr.arpa
04-Jun-2010 19:22:24.889 security: warning: client 41.223.214.27#8473: RFC
1918 response from Internet for 111.1.225.10.in-addr.arpa


and before this was the error i was having:
04-Jun-2010 14:12:38.773 general: error: isc_socket_create:
fcntl/reserved: Too many open files
04-Jun-2010 14:12:38.774 general: error: isc_socket_create:
fcntl/reserved: Too many open files
04-Jun-2010 14:12:38.774 general: error: isc_socket_create:
fcntl/reserved: Too many open files
04-Jun-2010 14:12:38.774 general: error: isc_socket_create:
fcntl/reserved: Too many open files
04-Jun-2010 14:12:38.817 general: error: isc_socket_create:
fcntl/reserved: Too many open files
04-Jun-2010 14:12:38.817 general: error: isc_socket_create:
fcntl/reserved: Too many open files
04-Jun-2010 14:12:38.818 general: error: isc_socket_create:
fcntl/reserved: Too many open files
04-Jun-2010 14:12:38.818 general: error: isc_socket_create:
fcntl/reserved: Too many open files
04-Jun-2010 14:12:38.834 general: error: isc_socket_create:
fcntl/reserved: Too many open files
04-Jun-2010 14:12:38.835 general: error: isc_socket_create:
fcntl/reserved: Too many open files
04-Jun-2010 14:12:38.835 general: error: isc_socket_create:
fcntl/reserved: Too many open files
04-Jun-2010 14:12:38.835 general: error: isc_socket_create:
fcntl/reserved: Too many open files
04-Jun-2010 14:12:38.835 general: error: isc_socket_create:
fcntl/reserved: Too many open files
04-Jun-2010 14:12:38.863 general: error: isc_socket_create:
fcntl/reserved: Too many open files

i ran ulimit -n 8192 and that seems to have solve that error