diff --git a/testutils/mixins.py b/testutils/mixins.py
index f24c577b..d71e45a6 100644
--- a/testutils/mixins.py
+++ b/testutils/mixins.py
@@ -33,17 +33,16 @@ def add_nib_route(self, iface, route, ip_addr):
 
     def ping(self, count, dest_addr, payload_size, delay):
         self.pexpect.sendline(
-                "ping6 {} {} {} {}".format(
-                    count, dest_addr, payload_size, delay))
+                "ping6 -c {} -i {} -s {} {} ".format(
+                    count, delay, payload_size, dest_addr))
         packet_loss = None
-        for i in range(count+1):
+        while True:
             exp = self.pexpect.expect(
-                    ["bytes from", "([\\d]+) packets transmitted, ([\\d]+) "
-                     "received, ([\\d]+)% packet loss", "timeout",
+                    ["bytes from", "([\\d]+)% packet loss", "timeout", 
                      pexpect.TIMEOUT], timeout=10)
 
             if exp == 1:
-                packet_loss = int(self.pexpect.match.group(3))
+                packet_loss = int(self.pexpect.match.group(1))
                 break
             if exp == 2:
                 print("x", end="", flush=True)