diff --git a/postplug.d/20network b/postplug.d/20network
index 85cd90c..aa1631b 100644
--- a/postplug.d/20network
+++ b/postplug.d/20network
@@ -152,7 +152,7 @@ for net_int in $(cat /proc/net/dev | sed -n '/p2p[0-9]*:/{s,:.*,,;p}'); do
       P2P_HWADDR=`ifconfig $net_int | grep HWaddr | sed "s|.* HWaddr ||"`
       cat > $network_devices/ifcfg-${net_int} << _EOF
 DEVICE=$net_int
-HWADDR=$P2P_HWADDR
+HWADDR=${P2P_HWADDR:0:17}
 ONBOOT=no
 NM_CONTROLLED=no
 _EOF