Issue #1746656: Add if_nameindex, if_nametoindex, if_indextoname
methods to the socket module.
diff --git a/configure.in b/configure.in
index 7e518a0..52f07e6 100644
--- a/configure.in
+++ b/configure.in
@@ -2512,6 +2512,7 @@
  futimens futimes \
  gai_strerror getgroups getlogin getloadavg getpeername getpgid getpid \
  getpriority getresuid getresgid getpwent getspnam getspent getsid getwd \
+ if_nameindex \
  initgroups kill killpg lchmod lchown lockf linkat lstat lutimes mbrtowc mkdirat mkfifo \
  mkfifoat mknod mknodat mktime mremap nice openat pathconf pause plock poll \
  posix_fallocate posix_fadvise pread \