From ca6efcd02b203e9e07b869af050c1b9849e04608 Mon Sep 17 00:00:00 2001
From: Jacob Hansen <jhansen@op5.com>
Date: Mon, 10 Dec 2018 13:49:13 +0000
Subject: check_icmp: emit error if multiple protocol version

As we do not support checking both IPv4 and IPv6 hosts in one execution
we emit an error if multiple protocol versions are defined in the cmd
line args.

Signed-off-by: Jacob Hansen <jhansen@op5.com>

diff --git a/plugins-root/check_icmp.c b/plugins-root/check_icmp.c
index 6a883a8..98891f0 100644
--- a/plugins-root/check_icmp.c
+++ b/plugins-root/check_icmp.c
@@ -467,10 +467,14 @@ main(int argc, char **argv)
 			unsigned short size;
 			switch(arg) {
 			case '4':
+				if (address_family != -1)
+					crash("Multiple protocol versions not supported");
 				address_family = AF_INET;
 				break;
 			case '6':
 #ifdef USE_IPV6
+				if (address_family != -1)
+					crash("Multiple protocol versions not supported");
 				address_family = AF_INET6;
 #else
 				usage (_("IPv6 support not available\n"));
-- 
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