Don't print error messages on common ping failure conditions.

1 files changed, 12 insertions, 3 deletions

diff --git a/module/bsnmp-ping.c b/module/bsnmp-ping.c
index 012db5c..7f2efcf 100644
--- a/module/bsnmp-ping.c
+++ b/module/bsnmp-ping.c
@@ -349,9 +349,18 @@ ping_fire (void *user_data)
     i = sendto(icmp_sock, icmp_packet, cc, 0, (struct sockaddr*)&(ping->addr),
                sizeof (ping->addr));
 
-    if (i < 0)
-        emsg ("couldn't send ICMP packet to: %s: %s", ping->host, strerror (errno));
-    else if (i != cc)
+    if (i < 0) {
+        switch (errno) {
+        case EHOSTDOWN:
+        case EHOSTUNREACH:
+        case ENETDOWN:
+        case ENETUNREACH:
+            break;
+        default:
+            emsg ("couldn't send ICMP packet to: %s: %s", ping->host, strerror (errno));
+            break;
+        }
+    } else if (i != cc)
         emsg ("partial write sending ICMP packet to: %", ping->host);
 
     ping->transmitted++;