Fedora8 + bind 9.4.2-0.4 => msg repetida de RFC 1918

Ola,

Meu servidor DNS mostra o tempo todo msgs como abaixo, quando recebe a demanda por consulta/traducao de nomes a partir de estacoes da rede local...

Nov 29 14:59:37 servsat named[1723]: client 192.168.0.4#64715: RFC 1918 response from Internet for 85.0.168.192.in-addr.arpa
Nov 29 15:01:37 servsat named[1723]: client 192.168.0.4#36580: RFC 1918 response from Internet for 171.0.168.192.in-addr.arpa
Nov 29 15:02:31 servsat named[1723]: client 192.168.0.4#64715: RFC 1918 response from Internet for 33.0.168.192.in-addr.arpa
Nov 29 15:03:11 servsat named[1723]: client 192.168.0.4#64715: RFC 1918 response from Internet for 148.0.168.192.in-addr.arpa
Nov 29 15:04:02 servsat named[1723]: client 192.168.0.4#64715: RFC 1918 response from Internet for 33.0.168.192.in-addr.arpa
Nov 29 15:09:24 servsat named[1723]: client 192.168.0.4#64715: RFC 1918 response from Internet for 68.0.168.192.in-addr.arpa
Nov 29 15:09:42 servsat named[1723]: client 192.168.0.4#64715: RFC 1918 response from Internet for 91.0.168.192.in-addr.arpa

Pesquisando na net, "parece" que isso nao é um problema. Se nao for, tem como eu desabilitar estas msgs e assim nao ficar "lotando" o /var/log/messages?