Ubuntu.pm: commented out get_network_configuration so that base version of function in Linux.pm will be used instead; the output of ifconfig changed in Ubuntu 18 such that the base function worked better for older and newer versions of Ubuntu
diff --git a/managementnode/lib/VCL/Module/OS/Linux/Ubuntu.pm b/managementnode/lib/VCL/Module/OS/Linux/Ubuntu.pm
index a74d74b..0b73160 100644
--- a/managementnode/lib/VCL/Module/OS/Linux/Ubuntu.pm
+++ b/managementnode/lib/VCL/Module/OS/Linux/Ubuntu.pm
@@ -154,6 +154,7 @@
 
 =cut
 
+=head2 comment out this get_network_configuration to use version of function in Linux.
 sub get_network_configuration {
 	my $self = shift;
 	if (ref($self) !~ /VCL::Module/i) {
@@ -238,6 +239,7 @@
 	return $self->{network_configuration};
 		
 }
+=cut
 
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