Hi everyone, I am answering this here as I found a workaround. I could not solve the solution when using the Juniper as the DNS server, so I reverted to using bind and that fixed the issue. Thanks for the help, everybody. Regards, Gabriel > I've just joine the list as I am having an issue with our CentOS servers. > > The domain resolution is extremely slow from the application but doing > an nslookup gives an immediate response. All the applications have the > same issue, as do all the servers. > > I have been looking for the solution all over the web and all I have > found are references to disabling ipv6. > - By setting enable_ipv6 = no in /etc/sysconfig/network, which is > already done on all the machines. > - By blacklisting the ip6 module, which is not an option as it is used > by the bonding module. Just for the sake of it, I tried it and, as > expected, the bonding module did not come back up. > > If bad comes to worse, I could set up host entries for the main machines > in /etc/hosts, but I really am trying to avoid that. > > Any suggestions? > > Thanks > > Gabriel Tabares