diff -up src/Net-Pcap-0.20/Makefile.PL.orig src/Net-Pcap-0.20/Makefile.PL
--- src/Net-Pcap-0.20/Makefile.PL.orig	2022-05-06 04:33:34.450000000 -0600
+++ src/Net-Pcap-0.20/Makefile.PL	2022-05-06 04:36:35.780000000 -0600
@@ -93,6 +93,7 @@ if( $pcap_version_number > 1009000 ) {
 }
 
 $options{DEFINE} .= cpp_defines(@funcs);
+$options{DEFINE} .= " -DPCAP_API=\"\" -DHAVE_PCAP_OPEN -DHAVE_PCAP_SETSAMPLING";
 
 # Since PCAP doesn't have a version define, we introduce one:
 (my $define = $pcap_version_number) =~ s!\.!!;