--- /usr/local/share/perl/5.22.1/Amazon/Dash/Button.pm	2018-04-30 20:29:18.952791765 +0200
+++ /usr/local/share/perl/5.22.1/Amazon/Dash/Button_patch.pm	2018-04-30 20:30:03.976834765 +0200
@@ -185,7 +185,7 @@
 # default values
 sub _build_timeout { 5 }
 sub _build_filter  { q{arp or ( udp and ( port 67 or port 68 ) ) } }
-sub _build_dev     { 'en0' }
+sub _build_dev     { 'eth0' }
 
 # the list of our button
 sub _build_devices { [] }