start: $VAR1 = undef;

after set handler: $VAR1 = sub { "DUMMY" };

after require: $VAR1 = sub { "DUMMY" };

after import: $VAR1 = sub { "DUMMY" };


OS: linux
Versions:
Perl
Carp 1.04
Config none
Data::Dumper 2.121_08
Errno 1.0901
Exporter 5.58
Exporter::Heavy 5.58
IO 1.22
IO::Handle 1.25
IO::Select 1.17
IO::Socket 1.29
IO::Socket::INET 1.29
IO::Socket::UNIX 1.22
Net::DNS 0.66
Net::DNS::Header 704
Net::DNS::Packet 837
Net::DNS::Question 800
Net::DNS::RR 828
Net::DNS::RR::Unknown 388
Net::DNS::Resolver 830
Net::DNS::Resolver::Base 830
Net::DNS::Resolver::UNIX 482
Net::DNS::Update 517
SelectSaver 1.01
Socket 1.78
Symbol 1.06
XSLoader 0.06
bytes 1.02
constant 1.05
overload 1.04
strict 1.03
vars 1.01
warnings 1.05
warnings::register 1.01