tftp download is working, http - not

[mimiko]

Hello.

I've encountered a Lenovo ideapad 100-15iby notebook. I try to network boot a tool, for example memtest. undionly.kpxe is loaded and in menu I have:

label memtest
kernel gpxecmd.c32
append chain http://ip/tools/memtest.ipxe


memtest.ipxe contain:

imgfree pxelinux.0 ||
chain memtest.0 || reboot

memtest.0 and memtest.ipxe resides in same folder.

On the screen I see that memtest.ipxe is loaded and executed, then memtest.0 is trying to download, but a long of time only dots appears. Then on the screen appears lot of errors of same type:

UNDINIC 0x2645c could not allocate xx bytes for RX buffer

Where xx some number. If I use tftp insteed - it works ok. On other machines http works too, only on this notebook is the problem.

Hardware Detection Tool detected two nics:

1) Realtec Semiconductor RTL8101E/RTL8102E PCI Express Fast Ethernet Controller
PCI ID: 10ec:8136[17aa:3830]
module: r8169

2) Realtec Semiconductor
Product: unknown
PCI ID: 10ec:8179[10ec:8179]
module: unknown

Please help.