Sean Davis wrote:
> Has anybody had this particular issue before?

Yes, I can see this on an embedded (PC/104) system with onboard fxp
NIC and NetBSD 2.0.E. The link goes down every 16-17 seconds, but only
if there is no traffic. If I ping the interface from the outside, the
link doesn't go down. This is a minimal installation with only the
(custom) kernel and same binaries and it's netbooted. Here is my dmesg
output:

NetBSD 2.0E (TICKY) #6: Thu May 27 02:00:11 CEST 2004
	root@firebird:/usr/src/sys/arch/i386/compile/TICKY
total memory = 65148 KB
avail memory = 61700 KB
BIOS32 rev. 0 found at 0xfd770
mainbus0 (root)
cpu0 at mainbus0: (uniprocessor)
cpu0: Intel Pentium/MMX (Tillamook) (586-class), 166.46 MHz, id 0x581
cpu0: features 8001bf
cpu0: features 8001bf
pci0 at mainbus0 bus 0: configuration mode 1
pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
pchb0 at pci0 dev 0 function 0
pchb0: Acer Labs M1531 Host-PCI Bridge (rev. 0xb3)
vga1 at pci0 dev 1 function 0: Chips and Technologies 69000 (rev. 0x64)
wsdisplay0 at vga1 kbdmux 1: console (80x25, dumb emulation)
wsmux1: connecting to wsdisplay0
pcib0 at pci0 dev 2 function 0
pcib0: Acer Labs M1543 PCI-ISA Bridge (rev. 0xc3)
fxp0 at pci0 dev 3 function 0: i82559S Ethernet, rev 9
fxp0: interrupting at irq 11
fxp0: Ethernet address 00:e0:4b:01:3d:22
inphy0 at fxp0 phy 1: i82555 10/100 media interface, rev. 4
inphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
aceride0 at pci0 dev 11 function 0
aceride0: Acer Labs M5229 UDMA IDE Controller (rev. 0xc1)
aceride0: bus-master DMA support present
aceride0: primary channel wired to compatibility mode
aceride0: primary channel interrupting at irq 14
atabus0 at aceride0 channel 0
aceride0: secondary channel wired to native-PCI mode
aceride0: secondary channel ignored (disabled)
ohci0 at pci0 dev 15 function 0: Acer Labs M5237 USB Host Controller 
(rev. 0x03)
ohci0: interrupting at irq 9
ohci0: OHCI version 1.0, legacy support
usb0 at ohci0: USB revision 1.0
uhub0 at usb0
uhub0: Acer Labs OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
isa0 at pcib0
lpt0 at isa0 port 0x378-0x37b irq 7
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
npx0 at isa0 port 0xf0-0xff: using exception 16
wd0 at atabus0 drive 0:
wd0: drive supports 1-sector PIO transfers, LBA addressing
wd0: 31360 KB, 980 cyl, 2 head, 32 sec, 512 bytes/sect x 62720 sectors
wd0: 32-bit data port
wd1 at atabus0 drive 1:
wd1: drive supports 1-sector PIO transfers, LBA addressing
wd1: 62720 KB, 490 cyl, 8 head, 32 sec, 512 bytes/sect x 125440 sectors
wd1: 32-bit data port
wd0(aceride0:0:0): using PIO mode 0
wd1(aceride0:0:1): using PIO mode 0
boot device: fxp0
root on fxp0
nfs_boot: trying DHCP/BOOTP
nfs_boot: DHCP next-server: 192.168.192.109
nfs_boot: my_addr=192.168.192.110
nfs_boot: my_mask=255.255.255.0
root on 192.168.192.109:/tickyroot
WARNING: clock time much less than file system time
WARNING: using file system time
WARNING: CHECK AND RESET THE DATE!