Description of problem:
vsftpd DNS lookup cannot be disabled.
This bug have been resolv in 5.x with the option 'reverse_lookup_enable'
but in 6.2 this option is no longer available
* the DNS reverse lookup feature was implemented without any way to disable
it. This update contains the parameter 'reverse_lookup_enable', which
allows users to enable or disable the DNS reverse lookup functionality.
Version-Release number of selected component (if applicable):
rpm -qi vsftpd
Name : vsftpd Relocations: (not relocatable)
Version : 2.2.2
Release : 6.el6_2.1
Steps to Reproduce:
1. having 2(or more) nameserver in /etc/resolv.conf that is NOT reachable
2. and then try to connect to the ftp server.
Connection timed out
trying with "reverse_lookup_enable=NO"
service vsftpd restart
Shutting down vsftpd: [FAILED]
Starting vsftpd for vsftpd: 500 OOPS: unrecognised variable in config file: reverse_lookup_enable
The fix will be available in the next update 6.3.
*** This bug has been marked as a duplicate of bug 752954 ***