I posted this before in another thread, but figured I'd re-post it as
its own thread.

The set-up we have is a dedicated system running OpenBSD 4.2, Squid and
SquidGuard.  Squid is running in transparent mode and is (obviously)
running as a transparent caching proxy, administratively blocking
certain sites via SquidGuard.

The problem we're having with this machine (and had with a previous
machine, but thought it was the old hardware we were running it on) is
that it will randomly have it's network interface stop working
completely.  The machine itself is not locked-up, and is still usable
from a local console, but all network activity ceases.  Attempts to
reset the card using ifconfig, etc, do nothing.  Once this "lock-up"
happens, the only thing that seems to fix it is a full reboot.

I have found no clues as to the cause of the problem in the log files.

The system is a shuttle box running an AMD_64 processor, 1GB of ram and
the built-in NIC, which uses the nfe driver.  Please note that this
system is not running pf.

As I mentioned earlier, we experienced the same problem with a
different system before (a re-commissioned PPC G4) and chalked it up to
old, unstable hardware.  But this is a reasonably modern system that is
experiencing the same problem.  Any help / hints would be greatly
appreciated.

Thanks in advance.  dmesg and sysctl output follow:

Here's the dmesg output:

OpenBSD 4.2 (GENERIC) #1179: Tue Aug 28 10:37:50 MDT 2007
    [EMAIL PROTECTED]:/usr/src/sys/arch/amd64/compile/GENERIC
real mem = 1073278976 (1023MB)
avail mem = 1030926336 (983MB)
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.2 @ 0xf0000 (39 entries)
bios0: vendor Phoenix Technologies, LTD version "6.00 PG" date
06/28/2005 bios0: Shuttle Inc SN95V30
acpi at mainbus0 not configured
cpu0 at mainbus0: (uniprocessor)
cpu0: AMD Athlon(tm) 64 Processor 3700+, 2211.02 MHz
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUS
H,MMX,FXSR,SSE,SSE2,SSE3,NXE,MMXX,FFXSR,LONG,3DNOW2,3DNOW
cpu0: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 1MB
64b/line 16-way L2 cache cpu0: ITLB 32 4KB entries fully associative, 8
4MB entries fully associative cpu0: DTLB 32 4KB entries fully
associative, 8 4MB entries fully associative cpu0: AMD erratum 89
present, BIOS upgrade may be required pci0 at mainbus0 bus 0:
configuration mode 1 pchb0 at pci0 dev 0 function 0 "NVIDIA nForce3 250
PCI Host" rev 0xa1 pcib0 at pci0 dev 1 function 0 "NVIDIA nForce3 250
ISA" rev 0xa2 nviic0 at pci0 dev 1 function 1 "NVIDIA nForce3 250
SMBus" rev 0xa1 iic0 at nviic0 iic1 at nviic0
adt0 at iic1 addr 0x2e: adm1027 rev 0x6a
iic1: addr 0x4e 03=06 04=06 12=ff 13=0f 28=83 29=12 2a=12 2b=28
ohci0 at pci0 dev 2 function 0 "NVIDIA nForce3 250 USB" rev 0xa1: irq
7, version 1.0, legacy support ohci1 at pci0 dev 2 function 1 "NVIDIA
nForce3 250 USB" rev 0xa1: irq 5, version 1.0, legacy support ehci0 at
pci0 dev 2 function 2 "NVIDIA nForce3 250 USB2" rev 0xa2: irq 10 usb0
at ehci0: USB revision 2.0 uhub0 at usb0: NVIDIA EHCI root hub, rev
2.00/1.00, addr 1 nfe0 at pci0 dev 5 function 0 "NVIDIA nForce3 LAN"
rev 0xa2: irq 10, address 00:30:1b:ba:2d:ee eephy0 at nfe0 phy 1:
Marvell 88E1111 Gigabit PHY, rev. 2 auich0 at pci0 dev 6 function 0
"NVIDIA nForce3 250 AC97" rev 0xa1: irq 7, nForce3 AC97 ac97: codec id
0x414c4760 (Avance Logic ALC655 rev 0) audio0 at auich0
pciide0 at pci0 dev 8 function 0 "NVIDIA nForce3 250 IDE" rev 0xa2:
DMA, channel 0 configured to compatibility, channel 1 configured to
compatibility pciide0: channel 0 disabled (no drives) atapiscsi0 at
pciide0 channel 1 drive 1 scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <LITE-ON, DVDRW SHW-160P6S, PS01> SCSI0
5/cdrom removable cd0(pciide0:1:1): using PIO mode 4, Ultra-DMA mode 4
pciide1 at pci0 dev 10 function 0 "NVIDIA nForce3 250 SATA" rev 0xa2:
DMA pciide1: using irq 11 for native-PCI interrupt
wd0 at pciide1 channel 0 drive 0: <WDC WD2500JD-00HBC0>
wd0: 16-sector PIO, LBA48, 238475MB, 488397168 sectors
wd0(pciide1:0:0): using PIO mode 4, Ultra-DMA mode 5
ppb0 at pci0 dev 11 function 0 "NVIDIA nForce3 250 AGP" rev 0xa2
pci1 at ppb0 bus 1
vga1 at pci1 dev 0 function 0 "ATI Radeon 9200 SE Sec" rev 0x01
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
"ATI Radeon 9200 SE" rev 0x01 at pci1 dev 0 function 1 not configured
ppb1 at pci0 dev 14 function 0 "NVIDIA nForce3 250 PCI-PCI" rev 0xa2
pci2 at ppb1 bus 2
"VIA VT6306 FireWire" rev 0x80 at pci2 dev 7 function 0 not configured
pchb1 at pci0 dev 24 function 0 "AMD AMD64 HyperTransport" rev 0x00
pchb2 at pci0 dev 24 function 1 "AMD AMD64 Address Map" rev 0x00
pchb3 at pci0 dev 24 function 2 "AMD AMD64 DRAM Cfg" rev 0x00
pchb4 at pci0 dev 24 function 3 "AMD AMD64 Misc Cfg" rev 0x00
isa0 at pcib0
isadma0 at isa0
com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
spkr0 at pcppi0
it0 at isa0 port 0x290/8: IT87
usb1 at ohci0: USB revision 1.0
uhub1 at usb1: NVIDIA OHCI root hub, rev 1.00/1.00, addr 1
usb2 at ohci1: USB revision 1.0
uhub2 at usb2: NVIDIA OHCI root hub, rev 1.00/1.00, addr 1
uhidev0 at uhub1 port 1 configuration 1 interface 0
uhidev0: LITE-ON Technology USB NetVista Full Width Keyboard., rev
1.10/1.09, addr 2, iclass 3/1 ukbd0 at uhidev0: 8 modifier keys, 6 key
codes wskbd1 at ukbd0 mux 1
wskbd1: connecting to wsdisplay0
dkcsum: wd0 matches BIOS drive 0x80
root on wd0a swap on wd0b dump on wd0b


And here's the output of sysctl (minus some things, such as kern.malloc
and kern.rand*)

kern.maxvnodes=1310
kern.maxproc=6000
kern.maxfiles=11000
kern.argmax=262144
kern.securelevel=1
kern.hostname=kyuusenchitai.marketingresources.com
kern.hostid=0
kern.clockrate=tick = 10000, tickadj = 40, hz = 100, profhz = 1024,
stathz = 128 kern.posix1version=199009
kern.ngroups=16
kern.job_control=1
kern.saved_ids=1
kern.boottime=Tue Apr 15 10:38:26 2008
kern.domainname=
kern.maxpartitions=16
kern.rawpartition=2
kern.osversion=GENERIC#1179
kern.somaxconn=1024
kern.sominconn=80
kern.usermount=0
kern.nosuidcoredump=1
kern.fsync=1
kern.sysvmsg=1
kern.sysvsem=1
kern.sysvshm=1
kern.arandom=3881413437
kern.msgbufsize=16344
kern.cp_time=350,0,994,548,279871
kern.nchstats.good_hits=31457
kern.nchstats.negative_hits=928
kern.nchstats.bad_hits=99
kern.nchstats.false_hits=5179
kern.nchstats.misses=16622
kern.nchstats.long_names=0
kern.nchstats.pass2=318
kern.nchstats.2passes=411
kern.nchstats.ncs_revhits=28
kern.nchstats.ncs_revmiss=0
kern.forkstat.forks=204
kern.forkstat.vforks=2
kern.forkstat.rforks=0
kern.forkstat.kthreads=14
kern.forkstat.fork_pages=146497
kern.forkstat.vfork_pages=1110
kern.forkstat.rfork_pages=0
kern.forkstat.kthread_pages=0
kern.nselcoll=0
kern.tty.tk_nin=244
kern.tty.tk_nout=796018
kern.tty.tk_rawcc=231
kern.tty.tk_cancc=13
kern.tty.maxptys=992
kern.tty.nptys=64
kern.ccpu=1948
kern.fscale=2048
kern.nprocs=67
kern.stackgap_random=262144
kern.usercrypto=1
kern.cryptodevallowsoft=0
kern.splassert=1
kern.nfiles=538
kern.ttycount=69
kern.numvnodes=2621
kern.userasymcrypto=1
kern.seminfo.semmni=10
kern.seminfo.semmns=60
kern.seminfo.semmnu=30
kern.seminfo.semmsl=60
kern.seminfo.semopm=100
kern.seminfo.semume=10
kern.seminfo.semusz=112
kern.seminfo.semvmx=32767
kern.seminfo.semaem=16384
kern.shminfo.shmmax=33554432
kern.shminfo.shmmin=1
kern.shminfo.shmmni=128
kern.shminfo.shmseg=128
kern.shminfo.shmall=8192
kern.emul.nemuls=0
kern.maxclusters=6144
kern.timecounter.tick=1
kern.timecounter.timestepwarnings=0
kern.timecounter.hardware=i8254
kern.timecounter.choice=i8254(0) dummy(-1000000)
kern.maxlocksperuid=1024
vm.loadavg=0.15 0.15 0.11
vm.psstrings=0x7f7fffffbfe0
vm.swapencrypt.enable=1
vm.swapencrypt.keyscreated=0
vm.swapencrypt.keysdeleted=0
vm.nkmempages=32768
vm.anonmin=10
vm.vtextmin=5
vm.vnodemin=10
fs.posix.setuid=1
net.inet.ip.forwarding=0
net.inet.ip.redirect=1
net.inet.ip.ttl=64
net.inet.ip.sourceroute=0
net.inet.ip.directed-broadcast=0
net.inet.ip.portfirst=1024
net.inet.ip.portlast=49151
net.inet.ip.porthifirst=49152
net.inet.ip.porthilast=65535
net.inet.ip.maxqueue=300
net.inet.ip.encdebug=0
net.inet.ip.ipsec-expire-acquire=30
net.inet.ip.ipsec-invalid-life=60
net.inet.ip.ipsec-pfs=1
net.inet.ip.ipsec-soft-allocs=0
net.inet.ip.ipsec-allocs=0
net.inet.ip.ipsec-soft-bytes=0
net.inet.ip.ipsec-bytes=0
net.inet.ip.ipsec-timeout=86400
net.inet.ip.ipsec-soft-timeout=80000
net.inet.ip.ipsec-soft-firstuse=3600
net.inet.ip.ipsec-firstuse=7200
net.inet.ip.ipsec-enc-alg=aes
net.inet.ip.ipsec-auth-alg=hmac-sha1
net.inet.ip.mtudisc=1
net.inet.ip.mtudisctimeout=600
net.inet.ip.ipsec-comp-alg=deflate
net.inet.ip.ifq.len=0
net.inet.ip.ifq.maxlen=256
net.inet.ip.ifq.drops=0
net.inet.ip.mforwarding=0
net.inet.ip.multipath=0
net.inet.icmp.maskrepl=0
net.inet.icmp.bmcastecho=0
net.inet.icmp.errppslimit=100
net.inet.icmp.rediraccept=1
net.inet.icmp.redirtimeout=600
net.inet.icmp.tstamprepl=1
net.inet.ipip.allow=0
net.inet.tcp.rfc1323=1
net.inet.tcp.keepinittime=150
net.inet.tcp.keepidle=14400
net.inet.tcp.keepintvl=150
net.inet.tcp.slowhz=2
net.inet.tcp.baddynamic=587,749,750,751,871
net.inet.tcp.recvspace=16384
net.inet.tcp.sendspace=16384
net.inet.tcp.sack=1
net.inet.tcp.mssdflt=512
net.inet.tcp.rstppslimit=100
net.inet.tcp.ackonpush=0
net.inet.tcp.ecn=0
net.inet.tcp.syncachelimit=10255
net.inet.tcp.synbucketlimit=105
net.inet.tcp.rfc3390=1
net.inet.tcp.reasslimit=3072
net.inet.tcp.sackholelimit=32768
net.inet.udp.checksum=1
net.inet.udp.baddynamic=623,664,749,750,751
net.inet.udp.recvspace=41600
net.inet.udp.sendspace=9216
net.inet.gre.allow=0
net.inet.gre.wccp=0
net.inet.esp.enable=1
net.inet.esp.udpencap=1
net.inet.esp.udpencap_port=4500
net.inet.ah.enable=1
net.inet.mobileip.allow=0
net.inet.etherip.allow=0
net.inet.ipcomp.enable=0
net.inet.carp.allow=1
net.inet.carp.preempt=0
net.inet.carp.log=0
net.inet.carp.arpbalance=0
net.inet6.ip6.forwarding=0
net.inet6.ip6.redirect=1
net.inet6.ip6.hlim=64
net.inet6.ip6.maxfragpackets=200
net.inet6.ip6.accept_rtadv=0
net.inet6.ip6.keepfaith=0
net.inet6.ip6.log_interval=5
net.inet6.ip6.hdrnestlimit=10
net.inet6.ip6.dad_count=1
net.inet6.ip6.auto_flowlabel=1
net.inet6.ip6.defmcasthlim=1
net.inet6.ip6.kame_version=OpenBSD-current
net.inet6.ip6.use_deprecated=1
net.inet6.ip6.rr_prune=5
net.inet6.ip6.v6only=1
net.inet6.ip6.maxfrags=200
net.inet6.ip6.mforwarding=0
net.inet6.ip6.multipath=0
net.inet6.ip6.multicast_mtudisc=0
net.inet6.icmp6.rediraccept=1
net.inet6.icmp6.redirtimeout=600
net.inet6.icmp6.nd6_prune=1
net.inet6.icmp6.nd6_delay=5
net.inet6.icmp6.nd6_umaxtries=3
net.inet6.icmp6.nd6_mmaxtries=3
net.inet6.icmp6.nd6_useloopback=1
net.inet6.icmp6.nodeinfo=1
net.inet6.icmp6.errppslimit=100
net.inet6.icmp6.nd6_maxnudhint=0
net.inet6.icmp6.mtudisc_hiwat=1280
net.inet6.icmp6.mtudisc_lowat=256
net.inet6.icmp6.nd6_debug=0
net.bpf.bufsize=32768
net.bpf.maxbufsize=2097152
hw.machine=amd64
hw.model=AMD Athlon(tm) 64 Processor 3700+
hw.ncpu=1
hw.byteorder=1234
hw.physmem=1073278976
hw.usermem=1073274880
hw.pagesize=4096
hw.disknames=cd0,wd0
hw.diskcount=2
hw.sensors.adt0.temp0=46.00 degC (Remote)
hw.sensors.adt0.temp1=39.00 degC (Internal)
hw.sensors.adt0.temp2=34.00 degC (Remote)
hw.sensors.adt0.fan0=810 RPM
hw.sensors.adt0.volt0=0.00 VDC (+2.5Vin)
hw.sensors.adt0.volt1=0.00 VDC (Vccp)
hw.sensors.adt0.volt2=4.97 VDC (Vcc)
hw.sensors.adt0.volt3=0.00 VDC (+5V)
hw.sensors.adt0.volt4=0.00 VDC (+12V)
hw.sensors.it0.temp0=44.00 degC
hw.sensors.it0.temp1=42.00 degC
hw.sensors.it0.temp2=46.00 degC
hw.sensors.it0.fan1=3668 RPM
hw.sensors.it0.volt0=1.36 VDC (VCORE_A)
hw.sensors.it0.volt1=1.44 VDC (VCORE_B)
hw.sensors.it0.volt2=3.26 VDC (+3.3V)
hw.sensors.it0.volt3=4.92 VDC (+5V)
hw.sensors.it0.volt4=11.90 VDC (+12V)
hw.sensors.it0.volt5=-5.68 VDC (Unused)
hw.sensors.it0.volt6=-3.81 VDC (-12V)
hw.sensors.it0.volt7=4.89 VDC (+5VSB)
hw.sensors.it0.volt8=3.06 VDC (VBAT)
hw.cpuspeed=2211
hw.vendor=Shuttle Inc
hw.product=SN95V30
hw.uuid=12973027-ffff-ffff-ffff-ffffffffffff
machdep.console_device=ttyC0
machdep.bios.diskinfo.128=bootdev = 0xa0000200, cylinders = 1023, heads
= 255, sectors = 63 machdep.bios.cksumlen=1
machdep.allowaperture=0
machdep.cpuvendor=AuthenticAMD
machdep.cpufeature=127663103
machdep.kbdreset=0
user.cs_path=/usr/bin:/bin:/usr/sbin:/sbin:/usr/X11R6/bin:/usr/local/bin
user.bc_base_max=2147483647
user.bc_dim_max=65535
user.bc_scale_max=2147483647
user.bc_string_max=2147483647
user.coll_weights_max=2
user.expr_nest_max=32
user.line_max=2048
user.re_dup_max=255
user.posix2_version=199212
user.posix2_c_bind=0
user.posix2_c_dev=0
user.posix2_char_term=0
user.posix2_fort_dev=0
user.posix2_fort_run=0
user.posix2_localedef=0
user.posix2_sw_dev=0
user.posix2_upe=0
user.stream_max=20
user.tzname_max=255
ddb.radix=16
ddb.max_width=80
ddb.max_line=24
ddb.tab_stop_width=8
ddb.panic=1
ddb.console=0
ddb.log=1
vfs.mounts.ffs has 5 mounted instances
vfs.ffs.doclusterread=1
vfs.ffs.doclusterwrite=1
vfs.ffs.doreallocblks=1
vfs.ffs.doasyncfree=1
vfs.ffs.max_softdeps=10480
vfs.ffs.sd_tickdelay=2
vfs.ffs.sd_worklist_push=0
vfs.ffs.sd_blk_limit_push=0
vfs.ffs.sd_ino_limit_push=0
vfs.ffs.sd_blk_limit_hit=0
vfs.ffs.sd_ino_limit_hit=0
vfs.ffs.sd_sync_limit_hit=0
vfs.ffs.sd_indir_blk_ptrs=0
vfs.ffs.sd_inode_bitmap=0
vfs.ffs.sd_direct_blk_ptrs=0
vfs.ffs.sd_dir_entry=0
vfs.ffs.dirhash_dirsize=2560
vfs.ffs.dirhash_maxmem=2097152
vfs.ffs.dirhash_mem=197023
vfs.nfs.iothreads=-1

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