diff --git a/src/mesh/eth/ethClient.cpp b/src/mesh/eth/ethClient.cpp
index 29f55ebee..4ac9bd9ad 100644
--- a/src/mesh/eth/ethClient.cpp
+++ b/src/mesh/eth/ethClient.cpp
@@ -94,6 +94,7 @@ bool initEthernet()
         //        createSSLCert();
 
         getMacAddr(mac); // FIXME use the BLE MAC for now...
+	mac[0] &= 0xfe; // Make sure this is not a multicast MAC
 
         if (config.network.address_mode == Config_NetworkConfig_AddressMode_DHCP) {
             LOG_INFO("starting Ethernet DHCP\n");