my $a = [ %c ];
my $d=Data::Dumper->New([ %c , $a]);
$Server->syswrite( $d , length($g));
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I'm not familiar with D::D's OO interface, but I believe that you want $d->Dump there, not the object itself. And what the heck is $g anyway?

Not able to unwrap $buffer Tried with Dumper( eval $buffer->Dump).

At the receiving end you want a simple eval, nothing that has to do with D::D.