Perl IO::Socket::INET6::sockaddr_in6 redefined error

Yesterday I installed spamassassin package on a server running RHEL 6.8. Then this morning, I received an email alert with the following message:

Subroutine IO::Socket::INET6::sockaddr_in6 redefined at /usr/share/perl5/Exporter.pm line 67.
 at /usr/share/perl5/IO/Socket/INET6.pm line 21.
Subroutine IO::Socket::INET6::sockaddr_in6 redefined at /usr/share/perl5/Exporter.pm line 67.
 at /usr/share/perl5/IO/Socket/INET6.pm line 21.
Subroutine IO::Socket::INET6::sockaddr_in6 redefined at /usr/share/perl5/Exporter.pm line 67.
 at /usr/share/perl5/IO/Socket/INET6.pm line 21.
Subroutine IO::Socket::INET6::sockaddr_in6 redefined at /usr/share/perl5/Exporter.pm line 67.
 at /usr/share/perl5/IO/Socket/INET6.pm line 21.

This seems to be a bug exists in an old version of IO::Socket::INET6. Upgrading this package should fix the problem:

# cpan IO::Socket::INET6

Ref: http://stackoverflow.com/questions/23909848/perl-iosocketinet6sockaddr-in6-redefined-error

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