From c757272443e967ed7fe8e40cd9cae3986be0dd4c Mon Sep 17 00:00:00 2001
From: Max <msuraev@sysmocom.de>
Date: Tue, 8 Nov 2016 16:08:29 +0100
Subject: [PATCH] dtx_check.gawk: add check for repetitive SID FIRST

Change-Id: Id7acdfae7880fb488b65435ab8d33f2874499967
---
 contrib/dtx_check.gawk | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/contrib/dtx_check.gawk b/contrib/dtx_check.gawk
index 3a3fa26d2..9a3ddcf6c 100755
--- a/contrib/dtx_check.gawk
+++ b/contrib/dtx_check.gawk
@@ -40,6 +40,10 @@ BEGIN {
 			CHK = "FAIL: " TYPE " followed by " $2 " instead of P2."
 			ERR++
 		}
+		if ("FIRST" == $2 && "FIRST" == TYPE) {
+			CHK = "FAIL: multiple SID FIRST in a row."
+			ERR++
+		}
 		if ("OK" == CHK && "ONSET" != $2) { # check inter-SID distances:
 			if ("UPDATE" == TYPE) {
 				if (DELTA > U_MAX) {