Restart the systemd-networkd after setting the MAC address

In the case of DHCP enabled box,DHCP negotiation should
be initiated after change of MAC address.

Shouldn't wait for auto-renegotiation,as if different
machine gets the old mac address then we can have
duplicate IP problem.

Change-Id: Ifde1a09762c9b9a717ffe7b258d5046f92b9bf1a
Signed-off-by: Ratan Gupta <ratagupt@in.ibm.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/ethernet_interface.cpp b/ethernet_interface.cpp
index 7c4e8bb..a9463c9 100644
--- a/ethernet_interface.cpp
+++ b/ethernet_interface.cpp
@@ -568,6 +568,13 @@ std::string EthernetInterface::mACAddress(std::string value)
     {
         intf.second->updateMacAddress();
     }
+
+    // restart the systemd networkd so that dhcp client gets the
+    // ip for the changed mac address.
+    if (dHCPEnabled())
+    {
+        restartSystemdUnit("systemd-networkd.service");
+    }
     return mac;
 
 }