This error indicates a temporary failure to transmit an IPv4 packet because no destination MAC address was available at the time of transmission.

The transmission will be deferred until ARP resolution is complete, at which point the packet will be automatically retransmitted. These errors occur during normal operation, and are not a cause for concern unless they are repeated many times.

Things to try (only if the errors are repeated many times):

• Check that you are attempting to connect to the correct IP address (or DNS name).