Article ID: 113504, created on Dec 11, 2014, last review on Dec 11, 2014

  • Applies to:
  • Plesk 12.0 for Linux
  • Plesk 11.5 for Linux
  • Plesk 10.4 for Linux/Unix

Síntomas

El servicio FTP no puede iniciarse y se obtiene el siguiente mensaje de error:

2011-12-28T10:06:42.255300+01:00 server xinetd[503]: socket creation failed (Address family not supported by protocol (errno = 97)). service = ftp
2011-12-28T10:06:42.255306+01:00 server xinetd[503]: Service ftp failed to start and is deactivated.

Causa

La causa del problema es que en el host no se ha habilitado el soporte para IPv6:

# grep v6 /etc/modprobe.conf
alias ipv6 off
options ipv6 disable=1
# grep -i v6 /etc/sysconfig/network
NETWORKING_IPV6=no
IPV6FORWARDING=yes

Resolución

En /etc/xinetd.d/ftp_psa, elimine la línea en rojo y añada la línea en verde:

service ftp
{
        flags           = IPv6
        flags           = IPv4 
        disable         = no
        socket_type     = stream
        protocol        = tcp
        wait            = no
        user            = root
        instances       = UNLIMITED
        server          = /usr/sbin/in.proftpd
        server_args     = -c /etc/proftpd.conf
}

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