From 762ffacc8e257cf46c8447c945ccc72b3f397d85 Mon Sep 17 00:00:00 2001
From: Steve Karg <steve@kargs.net>
Date: Sat, 10 Oct 2020 10:45:12 -0500
Subject: [PATCH] Bug#72 reading zero bytes in linux BIP. Thanks, Mikhail!
 (#132)

Co-authored-by: Steve Karg <skarg@users.sourceforge.net>
---
 ports/linux/bip-init.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ports/linux/bip-init.c b/ports/linux/bip-init.c
index ab284f6f..80811fad 100644
--- a/ports/linux/bip-init.c
+++ b/ports/linux/bip-init.c
@@ -516,6 +516,10 @@ static int readNlSock(
             perror("SOCK READ: ");
             return -1;
         }
+        if (readLen == 0) {
+            /* no data in the response */
+            break;
+        }
         nlHdr = (struct nlmsghdr *)bufPtr;
         /* Check if the header is valid */
         if ((0 == NLMSG_OK(nlHdr, readLen)) ||