diff --git a/nixos/modules/tasks/network-interfaces.nix b/nixos/modules/tasks/network-interfaces.nix
index 28c7b358093..59043444ef7 100644
--- a/nixos/modules/tasks/network-interfaces.nix
+++ b/nixos/modules/tasks/network-interfaces.nix
@@ -940,14 +940,8 @@ in
         source  = "${pkgs.iputils.out}/bin/ping";
         capabilities = "cap_net_raw+p";
       };
-
-      ping6 = {
-        source  = "${pkgs.iputils.out}/bin/ping6";
-        capabilities = "cap_net_raw+p";
-      };
     } else {
       ping.source = "${pkgs.iputils.out}/bin/ping";
-      "ping6".source = "${pkgs.iputils.out}/bin/ping6";
     };
 
     # Set the host and domain names in the activation script.  Don't
diff --git a/nixos/tests/cjdns.nix b/nixos/tests/cjdns.nix
index f32ec52dfc2..46666379924 100644
--- a/nixos/tests/cjdns.nix
+++ b/nixos/tests/cjdns.nix
@@ -109,14 +109,14 @@ import ./make-test.nix ({ pkgs, ...} : {
 
       # ping a few times each to let the routing table establish itself
 
-      $alice->succeed("ping6 -c 4 $carolIp6");
-      $bob->succeed("ping6 -c 4 $carolIp6");
+      $alice->succeed("ping -c 4 $carolIp6");
+      $bob->succeed("ping -c 4 $carolIp6");
 
-      $carol->succeed("ping6 -c 4 $aliceIp6");
-      $carol->succeed("ping6 -c 4 $bobIp6");
+      $carol->succeed("ping -c 4 $aliceIp6");
+      $carol->succeed("ping -c 4 $bobIp6");
 
-      $alice->succeed("ping6 -c 4 $bobIp6");
-      $bob->succeed("ping6 -c 4 $aliceIp6");
+      $alice->succeed("ping -c 4 $bobIp6");
+      $bob->succeed("ping -c 4 $aliceIp6");
 
       $alice->waitForUnit("httpd.service");
 
diff --git a/nixos/tests/containers-bridge.nix b/nixos/tests/containers-bridge.nix
index bb32d852a6f..598abd22e61 100644
--- a/nixos/tests/containers-bridge.nix
+++ b/nixos/tests/containers-bridge.nix
@@ -66,7 +66,7 @@ import ./make-test.nix ({ pkgs, ...} : {
       "${containerIp6}" =~ /([^\/]+)\/([0-9+])/;
       my $ip6 = $1;
       chomp $ip6;
-      $machine->succeed("ping6 -n -c 1 $ip6");
+      $machine->succeed("ping -n -c 1 $ip6");
       $machine->succeed("curl --fail http://[$ip6]/ > /dev/null");
 
       # Stop the container.
diff --git a/nixos/tests/containers-extra_veth.nix b/nixos/tests/containers-extra_veth.nix
index 2a54b1d961c..6339c8c558b 100644
--- a/nixos/tests/containers-extra_veth.nix
+++ b/nixos/tests/containers-extra_veth.nix
@@ -84,7 +84,7 @@ import ./make-test.nix ({ pkgs, ...} : {
 
       # Ping on main veth
       $machine->succeed("ping -n -c 1 192.168.0.100");
-      $machine->succeed("ping6 -n -c 1 fc00::2");
+      $machine->succeed("ping -n -c 1 fc00::2");
 
       # Ping on the first extra veth
       $machine->succeed("ping -n -c 1 192.168.1.100 >&2");
diff --git a/nixos/tests/containers-ipv6.nix b/nixos/tests/containers-ipv6.nix
index 320465ebb95..f676ed122bb 100644
--- a/nixos/tests/containers-ipv6.nix
+++ b/nixos/tests/containers-ipv6.nix
@@ -47,7 +47,7 @@ import ./make-test.nix ({ pkgs, ...} : {
       # multi-user.target, we should now be able to access it.
       my $ip = "${localIp}";
       chomp $ip;
-      $machine->succeed("ping6 -n -c 1 $ip");
+      $machine->succeed("ping -n -c 1 $ip");
       $machine->succeed("curl --fail http://[$ip]/ > /dev/null");
 
       # Stop the container.
diff --git a/nixos/tests/ipv6.nix b/nixos/tests/ipv6.nix
index 4e2e6379cad..060f6321679 100644
--- a/nixos/tests/ipv6.nix
+++ b/nixos/tests/ipv6.nix
@@ -54,22 +54,22 @@ import ./make-test.nix ({ pkgs, ...} : {
       }
 
       subtest "loopback address", sub {
-          $client->succeed("ping6 -c 1 ::1 >&2");
-          $client->fail("ping6 -c 1 ::2 >&2");
+          $client->succeed("ping -c 1 ::1 >&2");
+          $client->fail("ping -c 1 ::2 >&2");
       };
 
       subtest "local link addressing", sub {
           my $clientIp = waitForAddress $client, "eth1", "link";
           my $serverIp = waitForAddress $server, "eth1", "link";
-          $client->succeed("ping6 -c 1 -I eth1 $clientIp >&2");
-          $client->succeed("ping6 -c 1 -I eth1 $serverIp >&2");
+          $client->succeed("ping -c 1 $clientIp%eth1 >&2");
+          $client->succeed("ping -c 1 $serverIp%eth1 >&2");
       };
 
       subtest "global addressing", sub {
           my $clientIp = waitForAddress $client, "eth1", "global";
           my $serverIp = waitForAddress $server, "eth1", "global";
-          $client->succeed("ping6 -c 1 $clientIp >&2");
-          $client->succeed("ping6 -c 1 $serverIp >&2");
+          $client->succeed("ping -c 1 $clientIp >&2");
+          $client->succeed("ping -c 1 $serverIp >&2");
           $client->succeed("curl --fail -g http://[$serverIp]");
           $client->fail("curl --fail -g http://[$clientIp]");
       };
diff --git a/nixos/tests/networking.nix b/nixos/tests/networking.nix
index 83103f35d48..541f03324ab 100644
--- a/nixos/tests/networking.nix
+++ b/nixos/tests/networking.nix
@@ -166,24 +166,24 @@ let
           # Test vlan 1
           $client->waitUntilSucceeds("ping -c 1 192.168.1.1");
           $client->waitUntilSucceeds("ping -c 1 192.168.1.2");
-          $client->waitUntilSucceeds("ping6 -c 1 fd00:1234:5678:1::1");
-          $client->waitUntilSucceeds("ping6 -c 1 fd00:1234:5678:1::2");
+          $client->waitUntilSucceeds("ping -c 1 fd00:1234:5678:1::1");
+          $client->waitUntilSucceeds("ping -c 1 fd00:1234:5678:1::2");
 
           $router->waitUntilSucceeds("ping -c 1 192.168.1.1");
           $router->waitUntilSucceeds("ping -c 1 192.168.1.2");
-          $router->waitUntilSucceeds("ping6 -c 1 fd00:1234:5678:1::1");
-          $router->waitUntilSucceeds("ping6 -c 1 fd00:1234:5678:1::2");
+          $router->waitUntilSucceeds("ping -c 1 fd00:1234:5678:1::1");
+          $router->waitUntilSucceeds("ping -c 1 fd00:1234:5678:1::2");
 
           # Test vlan 2
           $client->waitUntilSucceeds("ping -c 1 192.168.2.1");
           $client->waitUntilSucceeds("ping -c 1 192.168.2.2");
-          $client->waitUntilSucceeds("ping6 -c 1 fd00:1234:5678:2::1");
-          $client->waitUntilSucceeds("ping6 -c 1 fd00:1234:5678:2::2");
+          $client->waitUntilSucceeds("ping -c 1 fd00:1234:5678:2::1");
+          $client->waitUntilSucceeds("ping -c 1 fd00:1234:5678:2::2");
 
           $router->waitUntilSucceeds("ping -c 1 192.168.2.1");
           $router->waitUntilSucceeds("ping -c 1 192.168.2.2");
-          $router->waitUntilSucceeds("ping6 -c 1 fd00:1234:5678:2::1");
-          $router->waitUntilSucceeds("ping6 -c 1 fd00:1234:5678:2::2");
+          $router->waitUntilSucceeds("ping -c 1 fd00:1234:5678:2::1");
+          $router->waitUntilSucceeds("ping -c 1 fd00:1234:5678:2::2");
         '';
     };
     dhcpOneIf = {
@@ -390,11 +390,11 @@ let
           $client2->succeed("ip addr >&2");
 
           # Test ipv6
-          $client1->waitUntilSucceeds("ping6 -c 1 fc00::1");
-          $client1->waitUntilSucceeds("ping6 -c 1 fc00::2");
+          $client1->waitUntilSucceeds("ping -c 1 fc00::1");
+          $client1->waitUntilSucceeds("ping -c 1 fc00::2");
 
-          $client2->waitUntilSucceeds("ping6 -c 1 fc00::1");
-          $client2->waitUntilSucceeds("ping6 -c 1 fc00::2");
+          $client2->waitUntilSucceeds("ping -c 1 fc00::1");
+          $client2->waitUntilSucceeds("ping -c 1 fc00::2");
         '';
     };
     vlan = let
diff --git a/pkgs/servers/monitoring/nagios/plugins/official-2.x.nix b/pkgs/servers/monitoring/nagios/plugins/official-2.x.nix
index 1ea6f88084d..67c3954ef56 100644
--- a/pkgs/servers/monitoring/nagios/plugins/official-2.x.nix
+++ b/pkgs/servers/monitoring/nagios/plugins/official-2.x.nix
@@ -16,8 +16,8 @@ stdenv.mkDerivation rec {
   # configured on the build machine).
   preConfigure= "
     configureFlagsArray=(
-      --with-ping-command='/run/wrappers/bin/ping -n -U -w %d -c %d %s'
-      --with-ping6-command='/run/wrappers/bin/ping6 -n -U -w %d -c %d %s'
+      --with-ping-command='/run/wrappers/bin/ping -4 -n -U -w %d -c %d %s'
+      --with-ping6-command='/run/wrappers/bin/ping -6 -n -U -w %d -c %d %s'
     )
   ";