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-rw-r--r--resolv/resolv-internal.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/resolv/resolv-internal.h b/resolv/resolv-internal.h
index 6ab8f2af09..1500adc607 100644
--- a/resolv/resolv-internal.h
+++ b/resolv/resolv-internal.h
@@ -100,4 +100,10 @@ libc_hidden_proto (__inet_pton_length)
 /* Called as part of the thread shutdown sequence.  */
 void __res_thread_freeres (void) attribute_hidden;
 
+/* The Linux kernel does not enable all ICMP messages on a UDP socket
+   by default.  A call this function enables full error reporting for
+   the socket FD.  FAMILY must be AF_INET or AF_INET6.  Returns 0 on
+   success, -1 on failure.  */
+int __res_enable_icmp (int family, int fd) attribute_hidden;
+
 #endif  /* _RESOLV_INTERNAL_H */