--- bind-9.18.48/configure.ac.orig
+++ bind-9.18.48/configure.ac
@@ -1033,6 +1033,7 @@
 #
 # Check for if_nametoindex() for IPv6 scoped addresses support
 #
+AC_SEARCH_LIBS([if_nametoindex], [socket])
 AC_CHECK_FUNCS([if_nametoindex])
 
 ISC_ATOMIC_LIBS=""