I wrote:

> Today I've tried to install NetBSD/landisk to
> the I-O DATA "Lan Tank" (SOTO-HDLWU) NAS box:
> http://supertank.iodata.jp/products/sotohdlwu/ (in Japanese)
> and it works fine.

FYI, on-board 8139C+ works fine with re(4) and hardware cksums:

---
 :
pci0 at shpcic0
pci0: i/o space, memory space enabled
re0 at pci0 dev 0 function 0: RealTek 8139C+ 10/100BaseTX
re0: interrupting at irq 5
re0: Ethernet address 00:a0:b0:70:c0:76
re0: using 64 tx descriptors
rlphy0 at re0 phy 0: Realtek internal PHY
rlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
 :

# ifconfig re0
re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	capabilities=3f80<TSO4,IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx,TCP4CSUM_Tx,UDP4CSUM_Rx,UDP4CSUM_Tx>
	enabled=3f00<IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx,TCP4CSUM_Tx,UDP4CSUM_Rx,UDP4CSUM_Tx>
	address: 00:a0:b0:70:c0:76
	media: Ethernet autoselect
	status: active
	inet 192.168.20.34 netmask 0xffffff00 broadcast 192.168.20.255
	inet6 fe80::2a0:b0ff:fe70:c076%re0 prefixlen 64 scopeid 0x1
# netstat -ni -I re0
Name  Mtu   Network       Address              Ipkts Ierrs    Opkts Oerrs Colls
re0   1500  <Link>        00:a0:b0:70:c0:76    36702     0    34743     0     0
re0   1500  192.168.20/24 192.168.20.34        36702     0    34743     0     0
re0   1500  fe80::/64     fe80::2a0:b0ff:fe    36702     0    34743     0     0
# 

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Izumi Tsutsui