/usr/share/perl5/SNMP/Info/Layer3/ is in libsnmp-info-perl 3.11-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/SNMP/Info/Layer3/Aironet.pm
/usr/share/perl5/SNMP/Info/Layer3/AlcatelLucent.pm
/usr/share/perl5/SNMP/Info/Layer3/AlteonAD.pm
/usr/share/perl5/SNMP/Info/Layer3/Altiga.pm
/usr/share/perl5/SNMP/Info/Layer3/Arista.pm
/usr/share/perl5/SNMP/Info/Layer3/Aruba.pm
/usr/share/perl5/SNMP/Info/Layer3/BayRS.pm
/usr/share/perl5/SNMP/Info/Layer3/BlueCoatSG.pm
/usr/share/perl5/SNMP/Info/Layer3/C3550.pm
/usr/share/perl5/SNMP/Info/Layer3/C4000.pm
/usr/share/perl5/SNMP/Info/Layer3/C6500.pm
/usr/share/perl5/SNMP/Info/Layer3/Cisco.pm
/usr/share/perl5/SNMP/Info/Layer3/CiscoASA.pm
/usr/share/perl5/SNMP/Info/Layer3/CiscoFWSM.pm
/usr/share/perl5/SNMP/Info/Layer3/Contivity.pm
/usr/share/perl5/SNMP/Info/Layer3/Dell.pm
/usr/share/perl5/SNMP/Info/Layer3/Enterasys.pm
/usr/share/perl5/SNMP/Info/Layer3/Extreme.pm
/usr/share/perl5/SNMP/Info/Layer3/F5.pm
/usr/share/perl5/SNMP/Info/Layer3/Force10.pm
/usr/share/perl5/SNMP/Info/Layer3/Foundry.pm
/usr/share/perl5/SNMP/Info/Layer3/H3C.pm
/usr/share/perl5/SNMP/Info/Layer3/HP9300.pm
/usr/share/perl5/SNMP/Info/Layer3/IBMGbTor.pm
/usr/share/perl5/SNMP/Info/Layer3/Juniper.pm
/usr/share/perl5/SNMP/Info/Layer3/Lantronix.pm
/usr/share/perl5/SNMP/Info/Layer3/Microsoft.pm
/usr/share/perl5/SNMP/Info/Layer3/Mikrotik.pm
/usr/share/perl5/SNMP/Info/Layer3/N1600.pm
/usr/share/perl5/SNMP/Info/Layer3/NetSNMP.pm
/usr/share/perl5/SNMP/Info/Layer3/Netscreen.pm
/usr/share/perl5/SNMP/Info/Layer3/Nexus.pm
/usr/share/perl5/SNMP/Info/Layer3/PacketFront.pm
/usr/share/perl5/SNMP/Info/Layer3/Passport.pm
/usr/share/perl5/SNMP/Info/Layer3/Pf.pm
/usr/share/perl5/SNMP/Info/Layer3/Pica8.pm
/usr/share/perl5/SNMP/Info/Layer3/SonicWALL.pm
/usr/share/perl5/SNMP/Info/Layer3/Steelhead.pm
/usr/share/perl5/SNMP/Info/Layer3/Sun.pm
/usr/share/perl5/SNMP/Info/Layer3/Tasman.pm
/usr/share/perl5/SNMP/Info/Layer3/Timetra.pm