Problem proftpd

[muchakk]

6.26]): USER komandos@domain: no such user found from renicom.eth0.raptor-cl-renicom-wyzynna.lubman.net.pl [::ffff:ip] to ::ffff:85.114.128.
65:21
Oct 11 22:10:52 g065.green.fastwebserver.de proftpd[4532] g065.green.fastwebserver.de (renicom.eth0.raptor-cl-renicom-wyzynna.lubman.net.pl[::ffff:ip
6.26]): FTP session closed.
Oct 11 22:10:53 g065.green.fastwebserver.de proftpd[4534] g065.green.fastwebserver.de (renicom.eth0.raptor-cl-renicom-wyzynna.lubman.net.pl[::ffff:ip
6.26]): error setting IPV6_V6ONLY: Protocol not available
Oct 11 22:11:03 g065.green.fastwebserver.de proftpd[4534] g065.green.fastwebserver.de (renicom.eth0.raptor-cl-renicom-wyzynna.lubman.net.pl[::ffff:ip
6.26]): FTP session opened.
Oct 11 22:11:03 g065.green.fastwebserver.de proftpd[4534] g065.green.fastwebserver.de (renicom.eth0.raptor-cl-renicom-wyzynna.lubman.net.pl[::ffff:ip
6.26]): FTP session closed.
Oct 11 22:12:13 g065.green.fastwebserver.de proftpd[4361] g065.green.fastwebserver.de: ProFTPD killed (signal 15)
Oct 11 22:12:13 g065.green.fastwebserver.de proftpd[4361] g065.green.fastwebserver.de: ProFTPD 1.3.0 standalone mode SHUTDOWN
Oct 11 22:12:14 g065.green.fastwebserver.de proftpd[4749] g065.green.fastwebserver.de: error setting IPV6_V6ONLY: Protocol not available
Oct 11 22:12:14 g065.green.fastwebserver.de proftpd[4749] g065.green.fastwebserver.de: ProFTPD 1.3.0 (stable) (built mar gen 2 10:57:47 CET 2007) standalone
mode STARTUP
Oct 11 22:16:00 g065.green.fastwebserver.de proftpd[4749] g065.green.fastwebserver.de: ProFTPD killed (signal 15)
Oct 11 22:16:00 g065.green.fastwebserver.de proftpd[4749] g065.green.fastwebserver.de: ProFTPD 1.3.0 standalone mode SHUTDOWN