I'm running NetBSD-current/i386, using a Compaq Netelligent dual port
ethernet card, and for some reason the interface is sending some strange
packets at a steady rate (tcpdump output follows) and I cannot figure out
what they are nor why they are being sent. The dmesg output from the
ethernet adapter is:

tl0 at pci2 dev 0 function 0
tl0: Compaq Dual Port Netelligent 10/100 TX
tl0: Ethernet address 00:08:c7:a4:a9:40
tl0: interrupting at irq 9
tlphy0 at tl0 phy 31: ThunderLAN 10baseT media interface, rev. 5
tlphy0: 10base5
tl1 at pci2 dev 1 function 0
tl1: Compaq Dual Port Netelligent 10/100 TX
tl1: Ethernet address 00:08:c7:a4:a9:c0
tl1: interrupting at irq 7
tlphy1 at tl1 phy 31: ThunderLAN 10baseT media interface, rev. 5
tlphy1: 10base5

Here is a dump of a few of the packets. Note that they are going out on both
tl0 and tl1, my LAN and cable modem, respectivly.


tcpdump: listening on tl1
	<snip arp stuff from cable modem network>
13:34:04.532962 0:8:c7:a4:a9:c0 > 0:8:c7:a4:a9:c0 sap 00 test/C
			 0000 e30:8:c7:a4:a9:c0 0:8:c7:a4:a9:c0 0003 3: 
			 0000 e3
13:34:04.533049 0:8:c7:a4:a9:c0 > 0:8:c7:a4:a9:c0 sap 00 test/C len=43
			 0000 0000 0000 0000 0000 0000 0000 0000
			 0000 0000 0000 0000 0000 0000 0000 0000
			 0000 0000 0000 0000 0000 00
	<snip>
13:34:15.532967 0:8:c7:a4:a9:c0 > 0:8:c7:a4:a9:c0 sap 00 test/C
			 0000 e30:8:c7:a4:a9:c0 0:8:c7:a4:a9:c0 0003 3: 
			 0000 e3
13:34:15.533043 0:8:c7:a4:a9:c0 > 0:8:c7:a4:a9:c0 sap 00 test/C len=43
			 0000 0000 0000 0000 0000 0000 0000 0000
			 0000 0000 0000 0000 0000 0000 0000 0000
			 0000 0000 0000 0000 0000 00
	<snip>
13:34:26.532984 0:8:c7:a4:a9:c0 > 0:8:c7:a4:a9:c0 sap 00 test/C
			 0000 e30:8:c7:a4:a9:c0 0:8:c7:a4:a9:c0 0003 3: 
			 0000 e3
13:34:26.533067 0:8:c7:a4:a9:c0 > 0:8:c7:a4:a9:c0 sap 00 test/C len=43
			 0000 0000 0000 0000 0000 0000 0000 0000
			 0000 0000 0000 0000 0000 0000 0000 0000
			 0000 0000 0000 0000 0000 00
	<snip>
13:34:37.532970 0:8:c7:a4:a9:c0 > 0:8:c7:a4:a9:c0 sap 00 test/C
			 0000 e30:8:c7:a4:a9:c0 0:8:c7:a4:a9:c0 0003 3: 
			 0000 e3
13:34:37.533053 0:8:c7:a4:a9:c0 > 0:8:c7:a4:a9:c0 sap 00 test/C len=43
			 0000 0000 0000 0000 0000 0000 0000 0000
			 0000 0000 0000 0000 0000 0000 0000 0000
			 0000 0000 0000 0000 0000 00
51 packets received by filter
0 packets dropped by kernel

The card is configured as follows:

tl0: flags=8863<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	address: 00:08:c7:a4:a9:40
	media: Ethernet autoselect (100baseTX full-duplex)
	status: active
	inet 192.168.69.1 netmask 0xffffff00 broadcast 192.168.69.1
tl1: flags=8863<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	address: 00:08:c7:a4:a9:c0
	media: Ethernet autoselect (10baseT)
	status: active
	inet 66.61.55.186 netmask 0xfffff800 broadcast 66.61.55.255

I am using ipf/ipnat to give my LAN internet access through the cable modem
attached to tl1.

What are these packets? This is something that is only happening in NetBSD,
I recently switched from FreeBSD and FreeBSD didn't do this. Can I stop
them, somehow?

Any light anyone can shed on this issue is welcome.

--Sean

Here's my full dmesg output, in case that might help

NetBSD 1.5W (EROS) #22: Sat Jun 23 13:29:13 EDT 2001
    dive@eros.endersgame.net:/system/src/sys/arch/i386/compile/EROS
cpu0: Intel Pentium III (Coppermine) Celeron (686-class), 534.58 MHz
cpu0: I-cache 16 KB 32b/line 4-way, D-cache 16 KB 32b/line 2-way
cpu0: L2 cache 128 KB 32b/line 4-way
cpu0: features 383f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR>
cpu0: features 383f9ff<PGE,MCA,CMOV,FGPAT,PSE36,MMX,FXSR,XMM>
total memory = 511 MB
avail memory = 472 MB
using 6574 buffers containing 26296 KB of memory
BIOS32 rev. 0 found at 0xfb300
PCI BIOS rev. 2.1 found at 0xfb330
PCI IRQ Routing Table rev. 1.0 found at 0xfdee0, size 176 bytes (9 entries)
PCI Interrupt Router at 000:07:0 (vendor 0x8086 product 0x7000)
PCI Exclusive IRQs: 7 9 11
mainbus0 (root)
pci0 at mainbus0 bus 0: configuration mode 1
pci0: i/o space, memory space enabled
pchb0 at pci0 dev 0 function 0
pchb0: vendor 0x8086 product 0x7190 (rev. 0x03)
ppb0 at pci0 dev 1 function 0: vendor 0x8086 product 0x7191 (rev. 0x03)
pci1 at ppb0 bus 1
pci1: i/o space, memory space enabled
vga0 at pci1 dev 0 function 0: vendor 0x10de product 0x002c (rev. 0x15)
wsdisplay0 at vga0: console (80x25, vt100 emulation)
pcib0 at pci0 dev 7 function 0
pcib0: vendor 0x8086 product 0x7110 (rev. 0x02)
pciide0 at pci0 dev 7 function 1: Intel 82371AB IDE controller (PIIX4) (rev. 0x01)
pciide0: bus-master DMA support present
pciide0: primary channel wired to compatibility mode
atapibus0 at pciide0 channel 0: 2 targets
cd0 at atapibus0 drive 0: <ASUS CD-S500/A, , V3.4H> type 5 cdrom removable
cd0: 32-bit data port
cd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
cd1 at atapibus0 drive 1: <Pioneer DVD-ROM ATAPIModel DVD-104S 012, , E1.25> type 5 cdrom removable
cd1: 32-bit data port
cd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
pciide0: primary channel interrupting at irq 14
cd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA data transfers)
cd1(pciide0:0:1): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA data transfers)
pciide0: secondary channel wired to compatibility mode
atapibus1 at pciide0 channel 1: 2 targets
cd2 at atapibus1 drive 0: <MATSHITA CD-RW CW-7585, , 1.04> type 5 cdrom removable
cd2: 32-bit data port
cd2: drive supports PIO mode 4, DMA mode 2
pciide0: secondary channel interrupting at irq 15
cd2(pciide0:1:0): using PIO mode 4, DMA mode 2 (using DMA data transfers)
vendor 0x8086 product 0x7112 (USB serial bus, revision 0x01) at pci0 dev 7 function 2 not configured
vendor 0x8086 product 0x7113 (miscellaneous bridge, revision 0x02) at pci0 dev 7 function 3 not configured
ppb1 at pci0 dev 11 function 0: vendor 0x1014 product 0x0022 (rev. 0x01)
pci2 at ppb1 bus 2
pci2: i/o space, memory space enabled
tl0 at pci2 dev 0 function 0
tl0: Compaq Dual Port Netelligent 10/100 TX
tl0: Ethernet address 00:08:c7:a4:a9:40
tl0: interrupting at irq 9
nsphy0 at tl0 phy 1: DP83840 10/100 media interface, rev. 1
nsphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
tlphy0 at tl0 phy 31: ThunderLAN 10baseT media interface, rev. 5
tlphy0: 10base5
tl1 at pci2 dev 1 function 0
tl1: Compaq Dual Port Netelligent 10/100 TX
tl1: Ethernet address 00:08:c7:a4:a9:c0
tl1: interrupting at irq 7
nsphy1 at tl1 phy 1: DP83840 10/100 media interface, rev. 1
nsphy1: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
tlphy1 at tl1 phy 31: ThunderLAN 10baseT media interface, rev. 5
tlphy1: 10base5
pciide1 at pci0 dev 19 function 0: Triones/Highpoint HPT366 IDE Controller
pciide1: bus-master DMA support present
pciide1: primary channel wired to native-PCI mode
pciide1: using irq 11 for native-PCI interrupt
wd0 at pciide1 channel 0 drive 0: <IBM-DPTA-372050>
wd0: drive supports 16-sector PIO transfers, LBA addressing
wd0: 19574 MB, 16383 cyl, 16 head, 63 sec, 512 bytes/sect x 40088160 sectors
wd0: 32-bit data port
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 4 (Ultra/66)
wd0(pciide1:0:0): using PIO mode 4, Ultra-DMA mode 4 (Ultra/66) (using DMA data transfers)
pciide2 at pci0 dev 19 function 1: Triones/Highpoint HPT366 IDE Controller
pciide2: bus-master DMA support present
pciide2: primary channel wired to native-PCI mode
pciide2: using irq 11 for native-PCI interrupt
wd1 at pciide2 channel 0 drive 0: <Maxtor 31536U2>
wd1: drive supports 16-sector PIO transfers, LBA addressing
wd1: 14655 MB, 16383 cyl, 16 head, 63 sec, 512 bytes/sect x 30015216 sectors
wd1: 32-bit data port
wd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 4 (Ultra/66)
wd1(pciide2:0:0): using PIO mode 4, Ultra-DMA mode 4 (Ultra/66) (using DMA data transfers)
isa0 at pcib0
com0 at isa0 port 0x3f8-0x3ff irq 4: 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
pmsi0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pmsi0 mux 0
pcppi0 at isa0 port 0x61
midi2 at pcppi0: PC speaker
sysbeep0 at pcppi0
isapnp0 at isa0 port 0x279: ISA Plug 'n Play device support
npx0 at isa0 port 0xf0-0xff: using exception 16
isapnp0: read port 0x203
isapnp0: No current device for tag, card 1
sb0 at isapnp0 port 0x220/16,0x330/2,0x388/4 irq 5 drq 1,5
sb0: Creative SB AWE64  PnP Audio: dsp v4.16
audio0 at sb0: full duplex, mmap, independent
mpu0 at sb0
midi0 at mpu0: SB MPU-401 MIDI UART
opl0 at sb0: model OPL3
midi1 at opl0: SB Yamaha OPL3
isapnp0: <Creative SB AWE64  PnP, CTL7002, PNPB02F, Game> port 0x200/8 not configured
isapnp0: <Creative SB AWE64  PnP, CTL0022, , WaveTable> port 0x620/4 not configured
biomask ed4d netmask efcd ttymask ffcf
boot device: wd0
root on wd0a dumps on wd0b
IP Filter: v3.4.16 initialized.  Default = pass all, Logging = disabled
wsdisplay0: screen 1 added (80x25, vt100 emulation)
wsdisplay0: screen 2 added (80x25, vt100 emulation)
wsdisplay0: screen 3 added (80x25, vt100 emulation)
wsdisplay0: screen 4 added (80x25, vt100 emulation)
wsmux1: connecting to wsdisplay0