On Thu, Mar 08, 2001 at 02:57:51AM -0500, Chris Ruvolo wrote:
> On Tue, Mar 06, 2001 at 10:36:45PM -0500, firstname.lastname@example.org wrote:
> > I've got an o2 that I'm trying to make netboot, and it seems to work,
> > however the o2 never acks the tftp packets. The tcpdump is attached. If
> > anyone has suggestions/ideas I'd love to hear them. I booted the o2 and
> > ran "bootp():" from the arc prompt.
> I had the same problem with my Indy. I think this is in the HOWTO now, but
> in case you missed it.. If you are running your tftpd on Linux >= 2.3.x
> echo 1 > /proc/sys/net/ipv4/ip_no_pmtu_disc
> Worked for me.
Yep, it's in there:
7.6. My machine doesn't download the kernel when I try to netboot
Your machine is replying to the BOOTP packets (you may verify this
using a packet sniffer like tcpdump or ethereal), but doesn't download
the kernel from your BOOTP server. This happens if your boot server is
running a kernel of the 2.3 series or higher. The problem may be
circumvented by doing a "echo 1 > /proc/sys/net/ipv4/ip_no_pmtu_disc"
as root on your boot server.