re(4) incorrect checksum

Pietro Cerutti pietro.cerutti at
Thu Jan 11 10:55:34 UTC 2007

Hi lists,

FreeBSD gahrtop.localhost 6.2-PRERELEASE FreeBSD 6.2-PRERELEASE #1:
Tue Jan  9 19:34:13 CET 2007
root at gahrtop:/usr/obj/usr/src/sys/GAHRTOP  i386

CPU: Intel(R) Core(TM)2 CPU         T7200  @ 2.00GHz (2000.15-MHz 686-class CPU)
  Cores per package: 2

re0: <RealTek 8168B/8111B PCIe Gigabit Ethernet> port 0xc800-0xc8ff
mem 0xff2ff000-0xff2fffff irq 17 at device 0.0 on pci2

($FreeBSD: src/sys/dev/re/if_re.c,v 2006/09/21 11:08:28 yongari Exp $)

I get checksum errors on every packet I send, example:

Checksum: 0x0bc5 [incorrect, should be 0x78fe (maybe caused by
checksum offloading?)]

I think this could be the cause of some web pages (e.g. Gmail in
standard view [html view works well]) not to be displayed.

I tracked down the problem to the re(4) driver just because wlan works good...

Any ideas?


Pietro Cerutti
ICQ: 117293691
PGP: 0x9571F78E

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