UDP packet drop during ARP resolution
We are facing an issue randomly and it seems that ARP is causing the issue.
Two applications on LInux on two nodes are communicating, with one sending SNMP Trap packets (UDP packets) after every 2 minutes. Sometimes it is seen that first packet is not sent by the node, and when packet capture is analyzed it is seen that ARP request is sent in the context of the first UDP packet.
Could it be that ARP resolution is the issue of UDP packet being dropped.
Please let me know if more information is required from our end.
Linux Version - 2.6.21