On Mon, Jun 21, 2010 at 9:33 AM, Stefan Hajnoczi <stefa...@gmail.com> wrote: > On Mon, Jun 21, 2010 at 8:38 AM, H. Peter Anvin <h...@zytor.com> wrote: >> I just discovered that gPXE 1.0.0 eats DNS packets sent via the UDP >> interface. This is somewhat puzzling to me, since the DNS packet >> doesn't even make it out the wire (it would have made more sense if the >> reply had been received, but a packet sniffer shows nothing on egress.) >> Removing gPXE (undionly.kkpxe) and running on the raw vendor stack >> eliminates this problem. >> >> This is threatening to become a showstopper for Syslinux 4.00, so I >> would really appreciate assistance in tracking this down. > > Is there a simple setup to reproduce this?
Okay, here is a setup that reproduces the issue: 1. Build syslinux.git/master (includes gPXE 1.0.0) 2. Put gpxelinux.0 and host.c32 in the TFTP server visible directory 3. kvm -boot n -tftp $tfp_dir -bootp gpxelinux.0 4. At the PXELINUX prompt: host.c32 vmsplice.net 5. Wait forever for DNS reply... When gPXE is built with DEBUG=pxe_udp there is lots of output as host.c32 and the DNS code in PXELINUX waits for a UDP reply. Stefan _______________________________________________ gPXE-devel mailing list gPXE-devel@etherboot.org http://etherboot.org/mailman/listinfo/gpxe-devel
