Always Networks Blog - General

Why am I seeing packets on my server that aren't for this server?

While troubleshooting a totally unrelated issue, one of my colleagues noticed that they were seeing packets in a tcpdump that were neither destined for nor sourced from the server. This is odd, when plugged into a switch, so we started digging.

Server 1, was sending a stream of packets to Server 2 - in a different subnet somewhere. Sometimes, although rarely, these packets could be seen …

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