diff --git a/python/slsdet/powers.py b/python/slsdet/powers.py
index a513eedbe..990f1e0bb 100755
--- a/python/slsdet/powers.py
+++ b/python/slsdet/powers.py
@@ -20,8 +20,26 @@ class Power(DetectorProperty):
     """
     def __init__(self, name, enum, default, detector):
 
-        super().__init__(partial(detector.getPower, enum),
-                         lambda x, y : detector.setPower(enum, x, y),
+        def get_power(modules=[]):
+            enabled = detector.isPowerEnabled(enum, modules)
+            values = detector.getDAC(enum, True, modules)
+
+            # replace disabled powers with 0
+            return [v if e else 0 for v, e in zip(values, enabled)]
+        
+
+        def set_power(value, modules=[]):
+
+            # always disable first
+            detector.setPowerEnabled([enum], False, modules)
+
+            if value > 0:
+                # set the value
+                detector.setDAC(enum, value, True, modules)
+                detector.setPowerEnabled([enum], True, modules)
+   
+        super().__init__(get_power,
+                         set_power,
                          detector.size,
                          name)
 
@@ -30,7 +48,7 @@ class Power(DetectorProperty):
 
     def __repr__(self):
         """String representation for a single power in all modules"""
-        powerstr = ''.join([f'{item:5d}' for item in self.get()])
+        powerstr = ''.join([f'{item:5d} mV' for item in self.get()])
         return f'{self.__name__:15s}:{powerstr}'
 
 class NamedPowers:
diff --git a/slsDetectorServers/eigerDetectorServer/slsDetectorFunctionList.c b/slsDetectorServers/eigerDetectorServer/slsDetectorFunctionList.c
index b1896607f..cf64c0b3a 100644
--- a/slsDetectorServers/eigerDetectorServer/slsDetectorFunctionList.c
+++ b/slsDetectorServers/eigerDetectorServer/slsDetectorFunctionList.c
@@ -302,9 +302,8 @@ u_int64_t getDetectorMAC() {
     char output[255];
 #ifdef VIRTUAL
     FILE *sysFile =
-        popen("cat /sys/class/net/$(ip route show default | grep -v vpn  | awk "
-              "'/default/ {print $5}')/address",
-              "r");
+        popen("ip link show $(ip route show default | grep -v vpn | awk '/default/ {print $5}') | grep link/ether | awk '{print $2}'",
+          "r");
 #else
     FILE *sysFile = popen("more /sys/class/net/eth0/address", "r");
 #endif