Hi all,

Running FreeBSD 4.11, we have noticed that some operations done on one physical network interface seems to cause packet drops on other interfaces on the system.

For example, starting a dhclient process on interface em0 will cause a few packets to get dropped on the active interface em1. Doing "ifconfig em0 down ; ifconfig em0 up"
will also have the same effect.

Has anyone else experienced this and does anyone know why it happens?

It's not a major problem but it would be nice to know what causes it so we'll know when to expect it as we're using the system for measurements of, among other things,
packet loss.

We're using Intel em(4) cards, on FreeBSD 4.11-RELEASE + Marko's network
stack virtualization patch.

Regards,

 /Ragnar
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