/usr/lib/perl5/auto/NetSNMP/agent/autosplit.ix is in libsnmp-perl 5.7.2~dfsg-8.1ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | # Index created by AutoSplit for ../blib/lib/NetSNMP/agent.pm
# (file acts as timestamp)
1;
|