Fail2Ban warning: Address family for hostname not supported

Created:

2016-12-18 06:53:54 UTC

Modified:

2017-08-08 13:38:14 UTC

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Fail2Ban warning: Address family for hostname not supported

Applicable to:

  • Plesk 12.5 for Linux

Symptoms

The following errors could be found in /var/log/fail2ban.log file:

    fail2ban.filter [8598]: WARNING Unable to find a corresponding IP address for 2001:db8:f61:a1ff:0:0:0:80: [Errno -9] Address family for hostname not supported

Cause

Fail2Ban does not officially support IPv6 protocol.

Resolution

The status of supporting IPv6 by Fail2Ban could be found at its official page on GitHub

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