diff --git a/src/util/virmacaddr.c b/src/util/virmacaddr.c
index 9d6ab7c004..c4ca0a8487 100644
--- a/src/util/virmacaddr.c
+++ b/src/util/virmacaddr.c
@@ -191,7 +191,7 @@ virMacAddrFormat(const virMacAddrPtr addr,
char *str)
{
snprintf(str, VIR_MAC_STRING_BUFLEN,
- "%02X:%02X:%02X:%02X:%02X:%02X",
+ "%02x:%02x:%02x:%02x:%02x:%02x",
addr->addr[0], addr->addr[1], addr->addr[2],
addr->addr[3], addr->addr[4], addr->addr[5]);
str[VIR_MAC_STRING_BUFLEN-1] = '\0';
diff --git a/tests/networkxml2xmlout/bandwidth-network.xml b/tests/networkxml2xmlout/bandwidth-network.xml
index 555ee18662..c0c8ac3882 100644
--- a/tests/networkxml2xmlout/bandwidth-network.xml
+++ b/tests/networkxml2xmlout/bandwidth-network.xml
@@ -3,7 +3,7 @@
986fed9e-a488-186d-ef2d-17ebfd1993f8
-
+
diff --git a/tests/networkxml2xmlout/dhcp6host-routed-network.xml b/tests/networkxml2xmlout/dhcp6host-routed-network.xml
index 7305043f37..1d3035ba37 100644
--- a/tests/networkxml2xmlout/dhcp6host-routed-network.xml
+++ b/tests/networkxml2xmlout/dhcp6host-routed-network.xml
@@ -5,7 +5,7 @@
-
+
diff --git a/tests/networkxml2xmlout/empty-allow-ipv6.xml b/tests/networkxml2xmlout/empty-allow-ipv6.xml
index 6ee55ad765..53e4fa7f8a 100644
--- a/tests/networkxml2xmlout/empty-allow-ipv6.xml
+++ b/tests/networkxml2xmlout/empty-allow-ipv6.xml
@@ -2,5 +2,5 @@
empty
81ff0d90-c91e-6742-64da-4a736edb9a9c
-
+
diff --git a/tests/networkxml2xmlout/isolated-network.xml b/tests/networkxml2xmlout/isolated-network.xml
index cc320a9d22..9ff1f55d66 100644
--- a/tests/networkxml2xmlout/isolated-network.xml
+++ b/tests/networkxml2xmlout/isolated-network.xml
@@ -2,7 +2,7 @@
private
81ff0d90-c91e-6742-64da-4a736edb9a9b
-
+
diff --git a/tests/networkxml2xmlout/routed-network.xml b/tests/networkxml2xmlout/routed-network.xml
index 9235e15406..cb81bae8a5 100644
--- a/tests/networkxml2xmlout/routed-network.xml
+++ b/tests/networkxml2xmlout/routed-network.xml
@@ -5,7 +5,7 @@
-
+
diff --git a/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-1.vmx b/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-1.vmx
index 9059197fb2..b2b5668ce1 100644
--- a/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-1.vmx
+++ b/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-1.vmx
@@ -18,4 +18,4 @@ ethernet0.present = "true"
ethernet0.networkName = "VM Network"
ethernet0.connectionType = "bridged"
ethernet0.addressType = "vpx"
-ethernet0.generatedAddress = "00:50:56:91:48:C7"
+ethernet0.generatedAddress = "00:50:56:91:48:c7"
diff --git a/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-2.vmx b/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-2.vmx
index 68f069b4ae..a0199cc95a 100644
--- a/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-2.vmx
+++ b/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-2.vmx
@@ -37,5 +37,5 @@ ethernet0.virtualDev = "vlance"
ethernet0.networkName = "VM Network"
ethernet0.connectionType = "bridged"
ethernet0.addressType = "generated"
-ethernet0.generatedAddress = "00:0C:29:3C:98:3E"
+ethernet0.generatedAddress = "00:0c:29:3c:98:3e"
ethernet0.generatedAddressOffset = "0"
diff --git a/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-3.vmx b/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-3.vmx
index e09c694d27..4ab2574e69 100644
--- a/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-3.vmx
+++ b/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-3.vmx
@@ -23,5 +23,5 @@ ethernet0.present = "true"
ethernet0.networkName = "VM Network"
ethernet0.connectionType = "bridged"
ethernet0.addressType = "generated"
-ethernet0.generatedAddress = "00:0C:29:F5:C3:0C"
+ethernet0.generatedAddress = "00:0c:29:f5:c3:0c"
ethernet0.generatedAddressOffset = "0"
diff --git a/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-4.vmx b/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-4.vmx
index 504997f0f9..a2d679f7fb 100644
--- a/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-4.vmx
+++ b/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-4.vmx
@@ -18,12 +18,12 @@ ethernet0.present = "true"
ethernet0.networkName = "VM Network"
ethernet0.connectionType = "bridged"
ethernet0.addressType = "vpx"
-ethernet0.generatedAddress = "00:50:56:91:66:D4"
+ethernet0.generatedAddress = "00:50:56:91:66:d4"
ethernet1.present = "true"
ethernet1.networkName = "VM Switch 2"
ethernet1.connectionType = "bridged"
ethernet1.addressType = "vpx"
-ethernet1.generatedAddress = "00:50:56:91:0C:51"
+ethernet1.generatedAddress = "00:50:56:91:0c:51"
serial0.present = "true"
serial0.fileType = "file"
serial0.fileName = "/vmfs/volumes/498076b2-02796c1a-ef5b-000ae484a6a3/virtMonServ1/serial1.file"
diff --git a/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-5.vmx b/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-5.vmx
index 2e3b85691d..192867ee8d 100644
--- a/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-5.vmx
+++ b/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-5.vmx
@@ -24,4 +24,4 @@ ethernet0.virtualDev = "e1000"
ethernet0.networkName = "VM-LAN"
ethernet0.connectionType = "bridged"
ethernet0.addressType = "vpx"
-ethernet0.generatedAddress = "00:50:56:BE:00:15"
+ethernet0.generatedAddress = "00:50:56:be:00:15"
diff --git a/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-6.vmx b/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-6.vmx
index 1f29ae5490..bc6a8356a4 100644
--- a/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-6.vmx
+++ b/tests/xml2vmxdata/xml2vmx-esx-in-the-wild-6.vmx
@@ -21,6 +21,6 @@ ethernet0.virtualDev = "vmxnet3"
ethernet0.networkName = "VM Network"
ethernet0.connectionType = "bridged"
ethernet0.addressType = "generated"
-ethernet0.generatedAddress = "00:0C:29:2C:3A:FC"
+ethernet0.generatedAddress = "00:0c:29:2c:3a:fc"
ethernet0.generatedAddressOffset = "0"
svga.vramSize = "8388608"
diff --git a/tests/xml2vmxdata/xml2vmx-ethernet-generated.vmx b/tests/xml2vmxdata/xml2vmx-ethernet-generated.vmx
index 4f5c47ba5f..18a6b67e93 100644
--- a/tests/xml2vmxdata/xml2vmx-ethernet-generated.vmx
+++ b/tests/xml2vmxdata/xml2vmx-ethernet-generated.vmx
@@ -12,5 +12,5 @@ ethernet0.present = "true"
ethernet0.networkName = "VM Network"
ethernet0.connectionType = "bridged"
ethernet0.addressType = "generated"
-ethernet0.generatedAddress = "00:0C:29:11:22:33"
+ethernet0.generatedAddress = "00:0c:29:11:22:33"
ethernet0.generatedAddressOffset = "0"
diff --git a/tests/xml2vmxdata/xml2vmx-gsx-in-the-wild-1.vmx b/tests/xml2vmxdata/xml2vmx-gsx-in-the-wild-1.vmx
index 48476d6d83..98935950e9 100644
--- a/tests/xml2vmxdata/xml2vmx-gsx-in-the-wild-1.vmx
+++ b/tests/xml2vmxdata/xml2vmx-gsx-in-the-wild-1.vmx
@@ -16,5 +16,5 @@ ethernet0.networkName = "net1"
ethernet0.connectionType = "custom"
ethernet0.vnet = "/dev/vmnet1"
ethernet0.addressType = "generated"
-ethernet0.generatedAddress = "00:0C:29:D6:2B:D3"
+ethernet0.generatedAddress = "00:0c:29:d6:2b:d3"
ethernet0.generatedAddressOffset = "0"
diff --git a/tests/xml2vmxdata/xml2vmx-gsx-in-the-wild-2.vmx b/tests/xml2vmxdata/xml2vmx-gsx-in-the-wild-2.vmx
index 757083ac3e..c597807ceb 100644
--- a/tests/xml2vmxdata/xml2vmx-gsx-in-the-wild-2.vmx
+++ b/tests/xml2vmxdata/xml2vmx-gsx-in-the-wild-2.vmx
@@ -16,5 +16,5 @@ ethernet0.networkName = "net1"
ethernet0.connectionType = "custom"
ethernet0.vnet = "/dev/vmnet1"
ethernet0.addressType = "generated"
-ethernet0.generatedAddress = "00:0C:29:D6:CB:A4"
+ethernet0.generatedAddress = "00:0c:29:d6:cb:a4"
ethernet0.generatedAddressOffset = "0"
diff --git a/tests/xml2vmxdata/xml2vmx-gsx-in-the-wild-3.vmx b/tests/xml2vmxdata/xml2vmx-gsx-in-the-wild-3.vmx
index 74cd47d08f..a07ecfe9ad 100644
--- a/tests/xml2vmxdata/xml2vmx-gsx-in-the-wild-3.vmx
+++ b/tests/xml2vmxdata/xml2vmx-gsx-in-the-wild-3.vmx
@@ -16,12 +16,12 @@ ethernet0.networkName = "net1"
ethernet0.connectionType = "custom"
ethernet0.vnet = "/dev/vmnet1"
ethernet0.addressType = "generated"
-ethernet0.generatedAddress = "00:0C:29:C4:BE:5A"
+ethernet0.generatedAddress = "00:0c:29:c4:be:5a"
ethernet0.generatedAddressOffset = "0"
ethernet1.present = "true"
ethernet1.networkName = "net2"
ethernet1.connectionType = "custom"
ethernet1.vnet = "/dev/vmnet2"
ethernet1.addressType = "generated"
-ethernet1.generatedAddress = "00:0C:29:C4:BE:64"
+ethernet1.generatedAddress = "00:0c:29:c4:be:64"
ethernet1.generatedAddressOffset = "0"
diff --git a/tests/xml2vmxdata/xml2vmx-gsx-in-the-wild-4.vmx b/tests/xml2vmxdata/xml2vmx-gsx-in-the-wild-4.vmx
index c9da2297b4..13619548e1 100644
--- a/tests/xml2vmxdata/xml2vmx-gsx-in-the-wild-4.vmx
+++ b/tests/xml2vmxdata/xml2vmx-gsx-in-the-wild-4.vmx
@@ -16,5 +16,5 @@ ethernet0.networkName = "net2"
ethernet0.connectionType = "custom"
ethernet0.vnet = "/dev/vmnet2"
ethernet0.addressType = "generated"
-ethernet0.generatedAddress = "00:0C:29:C5:E3:5D"
+ethernet0.generatedAddress = "00:0c:29:c5:e3:5d"
ethernet0.generatedAddressOffset = "0"
diff --git a/tests/xml2vmxdata/xml2vmx-ws-in-the-wild-1.vmx b/tests/xml2vmxdata/xml2vmx-ws-in-the-wild-1.vmx
index 539a371237..4211a67e62 100644
--- a/tests/xml2vmxdata/xml2vmx-ws-in-the-wild-1.vmx
+++ b/tests/xml2vmxdata/xml2vmx-ws-in-the-wild-1.vmx
@@ -17,6 +17,6 @@ ethernet0.present = "true"
ethernet0.virtualDev = "e1000"
ethernet0.connectionType = "nat"
ethernet0.addressType = "static"
-ethernet0.address = "00:90:B9:DC:EA:81"
+ethernet0.address = "00:90:b9:dc:ea:81"
ethernet0.checkMACAddress = "false"
svga.vramSize = "4194304"
diff --git a/tests/xml2vmxdata/xml2vmx-ws-in-the-wild-2.vmx b/tests/xml2vmxdata/xml2vmx-ws-in-the-wild-2.vmx
index 7035ac3160..ad68df960b 100644
--- a/tests/xml2vmxdata/xml2vmx-ws-in-the-wild-2.vmx
+++ b/tests/xml2vmxdata/xml2vmx-ws-in-the-wild-2.vmx
@@ -17,6 +17,6 @@ ethernet0.present = "true"
ethernet0.virtualDev = "e1000"
ethernet0.connectionType = "bridged"
ethernet0.addressType = "static"
-ethernet0.address = "00:90:B9:DC:EA:81"
+ethernet0.address = "00:90:b9:dc:ea:81"
ethernet0.checkMACAddress = "false"
svga.vramSize = "4194304"