FreeBSD box as router adding latency

Chris Dillon cdillon at
Wed Feb 25 14:56:48 PST 2004

On Wed, 25 Feb 2004, Aloha Guy wrote:

> Any ideas what is causing this? Is it the xl0 driver because I've
> used FreeBSD machines as ethernet routers before with a similar
> setup except there was no NAT involved and used the fxp drivers and
> it never had this problem. Thanks for your help in advance!

Additional delay while adding a hop is to be expected, no matter how
fast your network or router is.  You only added about 1ms on average,
which is about right.  The lost packet in the second traceroute might
be due to a full/half-duplex mismatch between one of the NICs and the

 Chris Dillon - cdillon(at)
 FreeBSD: The fastest, most open, and most stable OS on the planet
 - Available for IA32, IA64, AMD64, PC98, Alpha, and UltraSPARC architectures
 - PowerPC, ARM, MIPS, and S/390 under development

Q: Because it reverses the logical flow of conversation.
A: Why is putting a reply at the top of the message frowned upon?

More information about the freebsd-questions mailing list