[mrtg] mrtg 2.17.7 IPv6 Centos

[tslbai]

Hi,

problem is solved! :-)

There were old/buggy versions of INET6 and Socket6-Module in /usr/local

The solution was:

#cd /usr/local/lib64/

#rm -rf perl5

#cd /usr/local/share

#rm -rf perl5

Very helpful was:

#perl -MFile::Find=find -MFile::Spec::Functions -Tlwe 'find { wanted =>
sub { print canonpath $_ if /\.pm\z/ }, no_chdir => 1 }, @INC' | grep INET6

for findig the buggy modules.

The good Versions of Socket6 and INET6 come as Centos-Packages:
perl-IO-Socket-INET6 and perl-Socket6 (but were overridden in my case by
the buggy versions)

Bye,

Florian

--------------------------------------------------------------


On 18.04.2019 23:06, tslbai wrote:
> Hi,
>
> i'm running a server on CentOS 7.6(1810) and installed mrtg 2.17.7
> sucessfully.
>
> I have a simple IPv4-and IPv6-Konfig.
> IPv4 works; IPv6 fails.
>
> ### IPv4-Konfig - works with some error-messages
> ####################################
> EnableIPv6: yes
> WorkDir: /www/vhosts/www.xyz.de/htdocs/mrtg
> ImageDir: /www/vhosts/www.xyz.de/htdocs/mrtg/images
> LogDir: /var/lib/mrtg
> ThreshDir: /var/lib/mrtg
> MaxBytes[_]: 1250000
> Options[_]: growright, bits
> Target[test-gw1-vlan1]: ifInOctets.7&ifOutOctets.7:xyz123 at 192.168.25.25
> Title[test-gw1-vlan1]: bai-gw1 vlan1
> PageTop[test-gw1-vlan1]: <H1>bai-gw1 vlan1</H1>
>
> # env LANG=C /usr/local/mrtg2177/bin/mrtg /usr/local/mrtg2177/etc/mrtg.cfg
> Subroutine IO::Socket::INET6::pack_sockaddr_in6 redefined at
> /usr/share/perl5/vendor_perl/Exporter.pm line 66.
>  at /usr/local/share/perl5/IO/Socket/INET6.pm line 16.
> Subroutine IO::Socket::INET6::unpack_sockaddr_in6 redefined at
> /usr/share/perl5/vendor_perl/Exporter.pm line 66.
>  at /usr/local/share/perl5/IO/Socket/INET6.pm line 16.
> Subroutine IO::Socket::INET6::sockaddr_in6 redefined at
> /usr/share/perl5/vendor_perl/Exporter.pm line 66.
>  at /usr/local/share/perl5/IO/Socket/INET6.pm line 16.
> Subroutine SNMP_Session::pack_sockaddr_in6 redefined at
> /usr/share/perl5/vendor_perl/Exporter.pm line 66.
>  at /usr/local/mrtg2177/bin/../lib/mrtg2/SNMP_Session.pm line 149.
> Subroutine SNMPv1_Session::pack_sockaddr_in6 redefined at
> /usr/share/perl5/vendor_perl/Exporter.pm line 66.
>  at /usr/local/mrtg2177/bin/../lib/mrtg2/SNMP_Session.pm line 604.
> Subroutine main::pack_sockaddr_in6 redefined at
> /usr/share/perl5/vendor_perl/Exporter.pm line 66.
>  at /usr/local/mrtg2177/bin/mrtg line 305.
> Subroutine main::unpack_sockaddr_in6 redefined at
> /usr/share/perl5/vendor_perl/Exporter.pm line 66.
>  at /usr/local/mrtg2177/bin/mrtg line 305.
> Subroutine main::sockaddr_in6 redefined at
> /usr/share/perl5/vendor_perl/Exporter.pm line 66.
>  at /usr/local/mrtg2177/bin/mrtg line 305.
> #####################################################################
>
>
>
>
>
> ### IPv6-Konfig - doesnt work
> EnableIPv6: yes
> WorkDir: /www/vhosts/www.xyz.de/htdocs/mrtg
> ImageDir: /www/vhosts/www.xyz.de/htdocs/mrtg/images
> LogDir: /var/lib/mrtg
> ThreshDir: /var/lib/mrtg
> MaxBytes[_]: 1250000
> Options[_]: growright, bits
> Target[test6-gw1-vlan1]:
> ifInOctets.7&ifOutOctets.7:xyz123@[2001:db8:900f::f001]
> Title[test6-gw1-vlan1]: bai6-gw1 vlan1
> PageTop[test6-gw1-vlan1]: <H1>bai6-gw1 vlan1</H1>
>
> # env LANG=C /usr/local/mrtg2177/bin/mrtg /usr/local/mrtg2177/etc/mrtg.cfg
> Subroutine IO::Socket::INET6::pack_sockaddr_in6 redefined at
> /usr/share/perl5/vendor_perl/Exporter.pm line 66.
>  at /usr/local/share/perl5/IO/Socket/INET6.pm line 16.
> Subroutine IO::Socket::INET6::unpack_sockaddr_in6 redefined at
> /usr/share/perl5/vendor_perl/Exporter.pm line 66.
>  at /usr/local/share/perl5/IO/Socket/INET6.pm line 16.
> Subroutine IO::Socket::INET6::sockaddr_in6 redefined at
> /usr/share/perl5/vendor_perl/Exporter.pm line 66.
>  at /usr/local/share/perl5/IO/Socket/INET6.pm line 16.
> Subroutine SNMP_Session::pack_sockaddr_in6 redefined at
> /usr/share/perl5/vendor_perl/Exporter.pm line 66.
>  at /usr/local/mrtg2177/bin/../lib/mrtg2/SNMP_Session.pm line 149.
> Subroutine SNMPv1_Session::pack_sockaddr_in6 redefined at
> /usr/share/perl5/vendor_perl/Exporter.pm line 66.
>  at /usr/local/mrtg2177/bin/../lib/mrtg2/SNMP_Session.pm line 604.
> Subroutine main::pack_sockaddr_in6 redefined at
> /usr/share/perl5/vendor_perl/Exporter.pm line 66.
>  at /usr/local/mrtg2177/bin/mrtg line 305.
> Subroutine main::unpack_sockaddr_in6 redefined at
> /usr/share/perl5/vendor_perl/Exporter.pm line 66.
>  at /usr/local/mrtg2177/bin/mrtg line 305.
> Subroutine main::sockaddr_in6 redefined at
> /usr/share/perl5/vendor_perl/Exporter.pm line 66.
>  at /usr/local/mrtg2177/bin/mrtg line 305.
> Undefined subroutine &SNMP_Session::inet_ntop called at
> /usr/local/mrtg2177/bin/../lib/mrtg2/SNMP_Session.pm line 549.
>
> No files are written to workdir.
> In tcpdump i can see that via IPv6 no packets are sent to the target.
> With ping6, snmpwalk etc. is the target reacheble.
>
>
> Could you please give me a hint for debugging?
>
> Thanks & Bye,
> Florian
>
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