diff -uNr netcat-openbsd-debian-1.217-2/debian/patches/port-to-linux-with-libsd.patch netcat-openbsd-debian-1.217-2.mod/debian/patches/port-to-linux-with-libsd.patch
--- netcat-openbsd-debian-1.217-2/debian/patches/port-to-linux-with-libsd.patch	2020-06-05 04:20:03.000000000 +0300
+++ netcat-openbsd-debian-1.217-2.mod/debian/patches/port-to-linux-with-libsd.patch	2020-10-02 22:09:45.573193613 +0300
@@ -68,7 +68,7 @@
 +# include <linux/in6.h>
 +#endif
 +
-+#ifndef IPTOS_LOWDELAY
++#ifdef __ANDROID__
 +# define IPTOS_LOWDELAY 0x10
 +# define IPTOS_THROUGHPUT 0x08
 +# define IPTOS_RELIABILITY 0x04