pf/bridge stops passing packets

[Brandin L Claar <blc3@only.arl.psu.edu>]

I have 3.0 pf/bridge setup which has stopped passing packets on me
twice--once inline on a real network feed, once under testing as I was
trying to recreate the problem.  After it stops passing packets, I can
still log in on the console, but networking is completely dead.  There
were no error messages logged (such as out of memory errors or anything
like that).  Below is some info on the system after the packets stopped
flowing.  The netstat -m output appeared to be frozen in the displayed
state.  The system is running from the STABLE branch, cvsuped around
early February.

Are there any patches in STABLE or current that might address something
like this?  Do I need to run current, or should I up kernel memory
limits?  

Thanks for any info... 

$ netstat -m
636 mbufs in use:
        635 mbufs allocated to data
        1 mbuf allocated to socket names and addresses
584/622 mapped pages in use
1424 Kbytes allocated to network (93% in use)
0 requests for memory denied
0 requests for memory delayed
0 calls to protocol drain routines

$ sudo pfctl -sinfo
Status: Enabled  Time: 1017687441  Since: 1017687189  Debug: None
Bytes In IPv4: 17364454    Bytes Out: 717
         IPv6: 0           Bytes Out: 0
Inbound Packets IPv4:  Passed: 27441       Dropped: 13
                IPv6:  Passed: 0           Dropped: 0
Outbound Packets IPv4: Passed: 7           Dropped: 0
                 IPv6: Passed: 0           Dropped: 0
States: 7144
pf Counters
state searches            158786
state inserts             14784
state removals            14933
Counters
match                     42193
bad-offset                0
fragment                  0
short                     0
normalize                 0
memory                    0

OpenBSD 3.0-stable (GENERIC) #4: Fri Mar 29 11:00:14 EST 2002
    root@swift3:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: xchg bug workaround performed
cpu0: Cyrix 6x86 (486-class)
real mem  = 66695168 (65132K)
avail mem = 56528896 (55204K)
using 839 buffers containing 3436544 bytes (3356K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(94) BIOS, date 06/27/96, BIOS32 rev. 0 @
0xfb3f0
apm0 at bios0: Power Management spec V1.1
apm0: AC on, battery charge unknown, estimated 0:00 hours
pcibios0 at bios0: rev. 2.1 @ 0xf0000/0xb908
pcibios0: PCI BIOS has 5 Interrupt Routing table entries
pcibios0: PCI Interrupt Router at 000:07:0 ("Intel 82371SB PCI-ISA" rev
0x00)
pcibios0: PCI bus #0 is the last bus
bios0: ROM list: 0xc0000/0x8000
pci0 at mainbus0 bus 0: configuration mode 1 (bios)
pchb0 at pci0 dev 0 function 0 "Intel 82439HX" rev 0x03
pcib0 at pci0 dev 7 function 0 "Intel 82371SB PCI-ISA" rev 0x01
pciide0 at pci0 dev 7 function 1 "Intel 82371SB IDE" rev 0x00: DMA,
channel 0 wi
red to compatibility, channel 1 wired to compatibility
wd0 at pciide0 channel 0 drive 0: <WDC AC21000H>
wd0: 16-sector PIO, LBA, 1033MB, 2100 cyl, 16 head, 63 sec, 2116800
sectors
wd0(pciide0:0:0): using PIO mode 4, DMA mode 2
pciide0: channel 1 ignored (disabled)
dc0 at pci0 dev 17 function 0 "Lite-On PNIC" rev 0x20: irq 5 address
00:a0:cc:62
:e6:5d
bmtphy0 at dc0 phy 1: BCM5201 10/100 media interface, rev. 2
dc1 at pci0 dev 18 function 0 "Lite-On PNIC" rev 0x20: irq 9 address
00:a0:cc:62
:f8:12
bmtphy1 at dc1 phy 1: BCM5201 10/100 media interface, rev. 2
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard
vga0 at isa0 port 0x3b0/48 iomem 0xa0000/131072
wsdisplay0 at vga0: console (80x25, vt100 emulation), using wskbd0
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
sysbeep0 at pcppi0
npx0 at isa0 port 0xf0/16: using exception 16
pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
pccom0: console
pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
biomask 4040 netmask 4260 ttymask 4262
pctr: no performance counters in CPU
dkcsum: wd0 matched BIOS disk 80
root on wd0a
rootdev=0x0 rrootdev=0x300 rawdev=0x302


-- 
Brandin Claar
Network Analyst 
Penn State Applied Research Lab