HI,

What is your mac ? (at least the Ethernet card...)
Have you tried to reduce MTU on the mac ? On netbsd ?
I never had any ethernet problem with NetBSD in VPC

on 18/12/03 18:45, =AB=A0Jason Thorpe=A0=BB <thorpej@wasabisystems.com> wrote:

> Folks...
>=20
> I'm running NetBSD inside a Virtual PC (hosted on Mac OS 10.3).  I'm
> using this primarily for testing kernel changes.
>=20
> I'm having trouble using the emulated Ethernet.  Small packets are
> fine, but whenever I get a full-size TCP segment, I see:
>=20
> tlp0: discarding oversize frame (len=3D1522)
>=20
> This is 4 bytes larger than the 1518 maximum Ethernet frame size.  I'm
> not using VLANs, so I would not expect to see packets this large.
>=20
> Using tcpdump on the vpc, it seems as though the extra 4 bytes are just
> zeros.
>=20
> I'm wondering if anyone else has observed this.  I'm considering
> tweaking the driver to check for this condition on a 21041 (which is
> what Virtual PC emulates) and simply truncate the packet to 1518 bytes.
>=20
> Thanks...
>=20
>        -- Jason R. Thorpe <thorpej@wasabisystems.com>
>=20

--=20
Jean-Edouard BABIN
Mail: Jeb@jeb.com.fr
Web : www.Jeb.com.fr
IRC : Jeb @ Undernet