I logged in to an OpenBGPd router which I maintain remotely as I needed to
check something from dmesg.
The command "dmesg|less" resulted in 150 lines, none of which was what I
expected to see.
Here are some samples:
cannot forward src fe80:0005::0420:77e7:f6bf:3550, dst 2406:a000::0006:0d08,
nxt 6, rcvif sis0, outif vr1
cannot forward src fe80:0005::92f6:52ff:fe02:4734, dst 2406:a000::0005, nxt 17,
rcvif sis0, outif vr1
cannot forward src fe80:0005::0420:77e7:f6bf:3550, dst 2406:a000::0006:0d08,
nxt 17, rcvif sis0, outif vr1
cannot forward src fe80:0005::0224:21ff:fe29:eaca, dst 2406:a000::0005, nxt 17,
rcvif sis0, outif vr1
The link-local address of the rcvif is inet6 fe80::200:24ff:feca:3ad4%sis0
prefixlen 64 scopeid 0x5
so it isn't involved.
Furthermore the bgpd.conf ends with:
deny from any prefix fe80::/10 prefixlen >= 10 # link local unicast
deny from any prefix fec0::/10 prefixlen >= 10 # old site local unicast
deny from any prefix ff00::/8 prefixlen >= 8 # multicast
#EOF
Simple(?) question first: Why is traffic coming via a transit provider getting
past the link-local filter rule?
Secondly what do the "nxt 6" and "nxt 17" mean?
Mandatory dmesg from dmesg.boot:
OpenBSD 5.2 (GENERIC) #1: Fri Nov 30 17:27:14 EST 2012
[email protected]:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: Geode(TM) Integrated Processor by AMD PCS ("AuthenticAMD" 586-class) 500
MHz
cpu0: FPU,DE,PSE,TSC,MSR,CX8,SEP,PGE,CMOV,CFLUSH,MMX,MMXX,3DNOW2,3DNOW
real mem = 536408064 (511MB)
avail mem = 516780032 (492MB)
mainbus0 at root
bios0 at mainbus0: AT/286+ BIOS, date 20/80/26, BIOS32 rev. 0 @ 0xfac40
pcibios0 at bios0: rev 2.0 @ 0xf0000/0x10000
pcibios0: pcibios_get_intr_routing - function not supported
pcibios0: PCI IRQ Routing information unavailable.
pcibios0: PCI bus #1 is the last bus
bios0: ROM list: 0xc8000/0xa800
cpu0 at mainbus0: (uniprocessor)
amdmsr0 at mainbus0
pci0 at mainbus0 bus 0: configuration mode 1 (bios)
io address conflict 0x6100/0x100
io address conflict 0x6200/0x200
pchb0 at pci0 dev 1 function 0 "AMD Geode LX" rev 0x33
glxsb0 at pci0 dev 1 function 2 "AMD Geode LX Crypto" rev 0x00: RNG AES
vr0 at pci0 dev 6 function 0 "VIA VT6105M RhineIII" rev 0x96: irq 11, address
00:00:24:ca:d9:1c
ukphy0 at vr0 phy 1: Generic IEEE 802.3u media interface, rev. 3: OUI 0x004063,
model 0x0034
vr1 at pci0 dev 7 function 0 "VIA VT6105M RhineIII" rev 0x96: irq 5, address
00:00:24:ca:d9:1d
ukphy1 at vr1 phy 1: Generic IEEE 802.3u media interface, rev. 3: OUI 0x004063,
model 0x0034
vr2 at pci0 dev 8 function 0 "VIA VT6105M RhineIII" rev 0x96: irq 9, address
00:00:24:ca:d9:1e
ukphy2 at vr2 phy 1: Generic IEEE 802.3u media interface, rev. 3: OUI 0x004063,
model 0x0034
vr3 at pci0 dev 9 function 0 "VIA VT6105M RhineIII" rev 0x96: irq 12, address
00:00:24:ca:d9:1f
ukphy3 at vr3 phy 1: Generic IEEE 802.3u media interface, rev. 3: OUI 0x004063,
model 0x0034
ppb0 at pci0 dev 14 function 0 "TI PCI2250 PCI-PCI" rev 0x02
pci1 at ppb0 bus 1
sis0 at pci1 dev 0 function 0 "NS DP83815 10/100" rev 0x00, DP83816A: irq 10,
address 00:00:24:ca:3a:d4
nsphyter0 at sis0 phy 0: DP83815 10/100 PHY, rev. 1
sis1 at pci1 dev 1 function 0 "NS DP83815 10/100" rev 0x00, DP83816A: irq 7,
address 00:00:24:ca:3a:d5
nsphyter1 at sis1 phy 0: DP83815 10/100 PHY, rev. 1
sis2 at pci1 dev 2 function 0 "NS DP83815 10/100" rev 0x00, DP83816A: irq 10,
address 00:00:24:ca:3a:d6
nsphyter2 at sis2 phy 0: DP83815 10/100 PHY, rev. 1
sis3 at pci1 dev 3 function 0 "NS DP83815 10/100" rev 0x00, DP83816A: irq 7,
address 00:00:24:ca:3a:d7
nsphyter3 at sis3 phy 0: DP83815 10/100 PHY, rev. 1
glxpcib0 at pci0 dev 20 function 0 "AMD CS5536 ISA" rev 0x03: rev 3, 32-bit
3579545Hz timer, watchdog, gpio, i2c
gpio0 at glxpcib0: 32 pins
iic0 at glxpcib0
pciide0 at pci0 dev 20 function 2 "AMD CS5536 IDE" rev 0x01: DMA, channel 0
wired to compatibility, channel 1 wired to compatibility
wd0 at pciide0 channel 0 drive 0: <SanDisk SDCFH-002G>
wd0: 1-sector PIO, LBA, 1907MB, 3906560 sectors
wd0(pciide0:0:0): using PIO mode 4, DMA mode 2
pciide0: channel 1 ignored (disabled)
ohci0 at pci0 dev 21 function 0 "AMD CS5536 USB" rev 0x02: irq 15, version 1.0,
legacy support
ehci0 at pci0 dev 21 function 1 "AMD CS5536 USB" rev 0x02: irq 15
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "AMD EHCI root hub" rev 2.00/1.00 addr 1
isa0 at glxpcib0
isadma0 at isa0
com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
com0: console
com1 at isa0 port 0x2f8/8 irq 3: 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
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
nsclpcsio0 at isa0 port 0x2e/2: NSC PC87366 rev 9: GPIO VLM TMS
gpio1 at nsclpcsio0: 29 pins
npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
usb1 at ohci0: USB revision 1.0
uhub1 at usb1 "AMD OHCI root hub" rev 1.00/1.00 addr 1
mtrr: K6-family MTRR support (2 registers)
vscsi0 at root
scsibus0 at vscsi0: 256 targets
softraid0 at root
scsibus1 at softraid0: 256 targets
root on wd0a (b5067b7ec30e158f.a) swap on wd0b dump on wd0b
WARNING: / was not properly unmounted
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---
This life is not the real thing.
It is not even in Beta.
If it was, then OpenBSD would already have a man page for it.
