Subject: IPv6 dead in -bk11

From: Jeff Garzik <[email-masked]>
Date: Tue, 02 Nov 2004 07:47:43 -0500

IPv6 works 100% for my workstations in 2.6.10-rc2-bk2, but fails in 
2.6.10-rc2-bk11:

	[jgarzik@sata g]$ ping6 www.kame.net
	connect: Network is unreachable

100% reproducible on multiple machines (x86, x86-64).  Fedora Core 2 
userland.  The only difference is the kernel, no configuration 
differences account for this.  dmesg and config are attached, but IMO 
are unlikely to be helpful.

Did someone break the IPv6 routing code or something, perhaps?

I'll narrow down which -bk snapshot broke IPv6 later on today...

	Jeff

Linux version 2.6.10-rc1-bk11 ([email-masked]) (gcc version 3.3.3 20040412 (Red Hat Linux 3.3.3-7)) #1 SMP Tue Nov 2 07:35:27 EST 2004
BIOS-provided physical RAM map:
 BIOS-e820: 0000000000000000 - 000000000009e000 (usable)
 BIOS-e820: 000000000009e000 - 00000000000a0000 (reserved)
 BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 000000003fff0000 (usable)
 BIOS-e820: 000000003fff0000 - 0000000040000000 (reserved)
 BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved)
Warning only 896MB will be used.
Use a HIGHMEM enabled kernel.
896MB LOWMEM available.
found SMP MP-table at 000f8d90
On node 0 totalpages: 229376
  DMA zone: 4096 pages, LIFO batch:1
  Normal zone: 225280 pages, LIFO batch:16
  HighMem zone: 0 pages, LIFO batch:1
DMI 2.3 present.
ACPI: RSDP (v000 COMPAQ                                ) @ 0x000e9e10
ACPI: RSDT (v001 COMPAQ CPQ0063  0x20031217  0x00000000) @ 0x000e5640
ACPI: FADT (v001 COMPAQ CANTERW  0x00000001  0x00000000) @ 0x000e56ec
ACPI: SSDT (v001 COMPAQ  PROJECT 0x00000001 MSFT 0x0100000e) @ 0x000e6579
ACPI: MADT (v001 COMPAQ CANTERW  0x00000001  0x00000000) @ 0x000e5760
ACPI: ASF! (v016 COMPAQ CANTERW  0x00000001  0x00000000) @ 0x000e57c8
ACPI: DSDT (v001 COMPAQ     DSDT 0x00000001 MSFT 0x0100000e) @ 0x00000000
ACPI: PM-Timer IO Port: 0xf808
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
Processor #0 15:2 APIC version 20
ACPI: LAPIC (acpi_id[0x02] lapic_id[0x01] enabled)
Processor #1 15:2 APIC version 20
ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x02] high edge lint[0x1])
ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0])
IOAPIC[0]: apic_id 1 already used, trying 2
IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: IRQ0 used by override.
ACPI: IRQ2 used by override.
ACPI: IRQ9 used by override.
Enabling APIC mode:  Flat.  Using 1 I/O APICs
Using ACPI (MADT) for SMP configuration information
Built 1 zonelists
Kernel command line: ro root=LABEL=/ nogui
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 65536 bytes)
Detected 2395.070 MHz processor.
Using pmtmr for high-res timesource
Console: colour VGA+ 80x25
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 904796k/917504k available (2535k kernel code, 12164k reserved, 804k data, 192k init, 0k highmem)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
Calibrating delay loop... 4734.97 BogoMIPS (lpj=2367488)
Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
CPU: After generic identify, caps: bfebfbff 00000000 00000000 00000000
CPU: After vendor identify, caps:  bfebfbff 00000000 00000000 00000000
CPU: Trace cache: 12K uops, L1 D cache: 8K
CPU: L2 cache: 512K
CPU: Physical Processor ID: 0
CPU: After all inits, caps:        bfebfbff 00000000 00000000 00000080
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU0: Intel P4/Xeon Extended MCE MSRs (12) available
CPU0: Thermal monitoring enabled
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
CPU0: Intel(R) Pentium(R) 4 CPU 2.80GHz stepping 09
per-CPU timeslice cutoff: 1462.31 usecs.
task migration cache decay timeout: 2 msecs.
Booting processor 1/1 eip 3000
Initializing CPU#1
Calibrating delay loop... 4784.12 BogoMIPS (lpj=2392064)
CPU: After generic identify, caps: bfebfbff 00000000 00000000 00000000
CPU: After vendor identify, caps:  bfebfbff 00000000 00000000 00000000
CPU: Trace cache: 12K uops, L1 D cache: 8K
CPU: L2 cache: 512K
CPU: Physical Processor ID: 0
CPU: After all inits, caps:        bfebfbff 00000000 00000000 00000080
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#1.
CPU1: Intel P4/Xeon Extended MCE MSRs (12) available
CPU1: Thermal monitoring enabled
CPU1: Intel(R) Pentium(R) 4 CPU 2.80GHz stepping 09
Total of 2 processors activated (9519.10 BogoMIPS).
ENABLING IO-APIC IRQs
..TIMER: vector=0x31 pin1=2 pin2=-1
checking TSC synchronization across 2 CPUs: passed.
Brought up 2 CPUs
CPU0:
 domain 0: span 3
  groups: 1 2
  domain 1: span 3
   groups: 3
CPU1:
 domain 0: span 3
  groups: 2 1
  domain 1: span 3
   groups: 3
checking if image is initramfs...it isn't (no cpio magic); looks like an initrd
Freeing initrd memory: 137k freed
NET: Registered protocol family 16
PCI: Using configuration type 1
mtrr: v2.0 (20020519)
ACPI: Subsystem revision 20040816
ACPI: Interpreter enabled
ACPI: Using IOAPIC for interrupt routing
ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 10 *11 14 15)
ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 *5 6 7 10 11 14 15)
ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 *10 11 14 15)
ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 10 *11 14 15)
ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 10 *11 14 15)
ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 *5 6 7 10 11 14 15)
ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 10 11 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 10 *11 14 15)
ACPI: PCI Root Bridge [PCI0] (00:00)
PCI: Probing PCI hardware (bus 00)
PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.1
PCI: Transparent bridge - 0000:00:1e.0
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.HUB_._PRT]
SCSI subsystem initialized
usbcore: registered new driver usbfs
usbcore: registered new driver hub
PCI: Using ACPI for IRQ routing
ACPI: PCI interrupt 0000:00:1d.0[A] -> GSI 16 (level, low) -> IRQ 169
ACPI: PCI interrupt 0000:00:1d.1[B] -> GSI 19 (level, low) -> IRQ 177
ACPI: PCI interrupt 0000:00:1d.2[C] -> GSI 18 (level, low) -> IRQ 185
ACPI: PCI interrupt 0000:00:1d.7[D] -> GSI 23 (level, low) -> IRQ 193
ACPI: PCI interrupt 0000:00:1f.1[A] -> GSI 18 (level, low) -> IRQ 185
ACPI: PCI interrupt 0000:00:1f.2[A] -> GSI 18 (level, low) -> IRQ 185
ACPI: PCI interrupt 0000:00:1f.5[B] -> GSI 17 (level, low) -> IRQ 201
ACPI: PCI interrupt 0000:01:00.0[A] -> GSI 20 (level, low) -> IRQ 209
ACPI: PCI interrupt 0000:05:02.0[A] -> GSI 17 (level, low) -> IRQ 201
ACPI: PCI interrupt 0000:05:0a.0[A] -> GSI 21 (level, low) -> IRQ 217
Machine check exception polling timer started.
Initializing Cryptographic API
ACPI: Power Button (FF) [PWRF]
ACPI: Processor [CPU0] (supports C1, 8 throttling states)
ACPI: Processor [CPU1] (supports C1, 8 throttling states)
Real Time Clock Driver v1.12
Linux agpgart interface v0.100 (c) Dave Jones
agpgart: Detected an Intel i875 Chipset.
agpgart: Maximum main memory to use for agp memory: 816M
agpgart: AGP aperture is 256M @ 0xe0000000
serio: i8042 AUX port at 0x60,0x64 irq 12
serio: i8042 KBD port at 0x60,0x64 irq 1
Serial: 8250/16550 driver $Revision: 1.90 $ 8 ports, IRQ sharing enabled
ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
elevator: using anticipatory as default io scheduler
Floppy drive(s): fd0 is 1.44M
FDC 0 is a post-1991 82077
RAMDISK driver initialized: 16 RAM disks of 16384K size 1024 blocksize
Universal TUN/TAP device driver 1.5 (C)1999-2002 Maxim Krasnyansky
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
ICH5: IDE controller at PCI slot 0000:00:1f.1
PCI: Enabling device 0000:00:1f.1 (0005 -> 0007)
ACPI: PCI interrupt 0000:00:1f.1[A] -> GSI 18 (level, low) -> IRQ 185
ICH5: chipset revision 2
ICH5: not 100% native mode: will probe irqs later
    ide0: BM-DMA at 0x24c0-0x24c7, BIOS settings: hda:DMA, hdb:pio
    ide1: BM-DMA at 0x24c8-0x24cf, BIOS settings: hdc:DMA, hdd:pio
Probing IDE interface ide0...
hda: MAXTOR 6L080J4, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
hdc: HL-DT-ST CD-ROM GCR-8480B, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
hda: max request size: 128KiB
hda: 156301488 sectors (80026 MB) w/1819KiB Cache, CHS=65535/16/63, UDMA(100)
hda: cache flushes supported
 hda: hda1 hda2 hda3 hda4 < hda5 hda6 >
hdc: ATAPI 48X CD-ROM drive, 128kB Cache, DMA
Uniform CD-ROM driver Revision: 3.20
ACPI: PCI interrupt 0000:00:1d.7[D] -> GSI 23 (level, low) -> IRQ 193
ehci_hcd 0000:00:1d.7: EHCI Host Controller
PCI: Setting latency timer of device 0000:00:1d.7 to 64
ehci_hcd 0000:00:1d.7: irq 193, pci mem 0xf0500000
ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 1
PCI: cache line size of 128 is not supported by device 0000:00:1d.7
ehci_hcd 0000:00:1d.7: USB 2.0 enabled, EHCI 1.00, driver 2004-May-10
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 8 ports detected
USB Universal Host Controller Interface driver v2.2
hub 1-0:1.0: over-current change on port 7
ACPI: PCI interrupt 0000:00:1d.0[A] -> GSI 16 (level, low) -> IRQ 169
uhci_hcd 0000:00:1d.0: UHCI Host Controller
PCI: Setting latency timer of device 0000:00:1d.0 to 64
uhci_hcd 0000:00:1d.0: irq 169, io base 0x2440
uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 2
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
ACPI: PCI interrupt 0000:00:1d.1[B] -> GSI 19 (level, low) -> IRQ 177
uhci_hcd 0000:00:1d.1: UHCI Host Controller
PCI: Setting latency timer of device 0000:00:1d.1 to 64
uhci_hcd 0000:00:1d.1: irq 177, io base 0x2460
uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 3
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 2 ports detected
ACPI: PCI interrupt 0000:00:1d.2[C] -> GSI 18 (level, low) -> IRQ 185
uhci_hcd 0000:00:1d.2: UHCI Host Controller
PCI: Setting latency timer of device 0000:00:1d.2 to 64
uhci_hcd 0000:00:1d.2: irq 185, io base 0x2480
uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 4
hub 4-0:1.0: USB hub found
hub 4-0:1.0: 2 ports detected
Initializing USB Mass Storage driver...
usbcore: registered new driver usb-storage
USB Mass Storage support registered.
mice: PS/2 mouse device common for all mice
input: AT Translated Set 2 keyboard on isa0060/serio0
input: ImPS/2 Generic Wheel Mouse on isa0060/serio1
input: PC Speaker
NET: Registered protocol family 26
NET: Registered protocol family 2
IP: routing cache hash table of 8192 buckets, 64Kbytes
TCP: Hash tables configured (established 262144 bind 65536)
Initializing IPsec netlink socket
NET: Registered protocol family 1
NET: Registered protocol family 10
IPv6 over IPv4 tunneling driver
NET: Registered protocol family 17
NET: Registered protocol family 15
p4-clockmod: P4/Xeon(TM) CPU On-Demand Clock Modulation available
ACPI: (supports S0 S1 S3 S4 S5)
ACPI wakeup devices: 
PCI0  HUB COM1 COM2 USB1 USB2 USB3 USB4 EUSB PBTN 
BIOS EDD facility v0.16 2004-Jun-25, 3 devices found
RAMDISK: Compressed image found at block 0
VFS: Mounted root (ext2 filesystem).
libata version 1.02 loaded.
ata_piix version 1.02
ACPI: PCI interrupt 0000:00:1f.2[A] -> GSI 18 (level, low) -> IRQ 185
PCI: Setting latency timer of device 0000:00:1f.2 to 64
ata1: SATA max UDMA/133 cmd 0x24F0 ctl 0x280A bmdma 0x24D0 irq 185
ata2: SATA max UDMA/133 cmd 0x24F8 ctl 0x280E bmdma 0x24D8 irq 185
ata1: dev 0 cfg 49:2f00 82:74eb 83:7fea 84:4023 85:74e9 86:3c02 87:4023 88:203f
ata1: dev 0 ATA, max UDMA/100, 160836480 sectors: lba48
ata1: dev 0 configured for UDMA/100
scsi0 : ata_piix
ata2: SATA port has no device.
scsi1 : ata_piix
  Vendor: ATA       Model: HDS722580VLSA80   Rev: V32O
  Type:   Direct-Access                      ANSI SCSI revision: 05
SCSI device sda: 160836480 512-byte hdwr sectors (82348 MB)
SCSI device sda: drive cache: write back
 sda: sda1
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
Attached scsi generic sg0 at scsi0, channel 0, id 0, lun 0,  type 0
sata_sil version 0.54
ACPI: PCI interrupt 0000:05:0a.0[A] -> GSI 21 (level, low) -> IRQ 217
ata3: SATA max UDMA/100 cmd 0xF8848080 ctl 0xF884808A bmdma 0xF8848000 irq 217
ata4: SATA max UDMA/100 cmd 0xF88480C0 ctl 0xF88480CA bmdma 0xF8848008 irq 217
ata3: dev 0 cfg 49:2f00 82:7c6b 83:7f09 84:4003 85:7c69 86:3e01 87:4003 88:407f
ata3: dev 0 ATA, max UDMA/133, 488281250 sectors: lba48
ata3: dev 0 configured for UDMA/100
scsi2 : sata_sil
ata4: no device found (phy stat 00000000)
scsi3 : sata_sil
  Vendor: ATA       Model: Maxtor 6Y250M0    Rev: YAR5
  Type:   Direct-Access                      ANSI SCSI revision: 05
SCSI device sdb: 488281250 512-byte hdwr sectors (250000 MB)
SCSI device sdb: drive cache: write back
 sdb: sdb1
Attached scsi disk sdb at scsi2, channel 0, id 0, lun 0
Attached scsi generic sg1 at scsi2, channel 0, id 0, lun 0,  type 0
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
Freeing unused kernel memory: 192k freed
EXT3 FS on hda5, internal journal
Adding 1020592k swap on /dev/hda2.  Priority:-1 extents:1
kjournald starting.  Commit interval 5 seconds
EXT3 FS on sda1, internal journal
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting.  Commit interval 5 seconds
EXT3 FS on hda3, internal journal
EXT3-fs: mounted filesystem with ordered data mode.
ip_tables: (C) 2000-2002 Netfilter core team
Disabled Privacy Extensions on device c03f5880(lo)
tg3.c:v3.11 (October 20, 2004)
ACPI: PCI interrupt 0000:05:02.0[A] -> GSI 17 (level, low) -> IRQ 201
eth0: Tigon3 [partno(BCM95700A6) rev 3002 PHY(5705)] (PCI:33MHz:32-bit) 10/100/1000BaseT Ethernet 00:30:6e:4c:04:ac
eth0: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] Split[0] WireSpeed[0] TSOcap[1] 
ip_tables: (C) 2000-2002 Netfilter core team
tg3: eth0: Link is up at 1000 Mbps, full duplex.
tg3: eth0: Flow control is on for TX and on for RX.
Intel 810 + AC97 Audio, version 1.01, 07:31:33 Nov  2 2004
ACPI: PCI interrupt 0000:00:1f.5[B] -> GSI 17 (level, low) -> IRQ 201
PCI: Setting latency timer of device 0000:00:1f.5 to 64
i810: Intel ICH5 found at IO 0x2400 and 0x2000, MEM 0xf0500400 and 0xf0500600, IRQ 201
i810: Intel ICH5 mmio at 0xf8852400 and 0xf8860600
i810_audio: Primary codec has ID 0
i810_audio: Audio Controller supports 6 channels.
i810_audio: Defaulting to base 2 channel mode.
i810_audio: Resetting connection 0
i810_audio: Connection 0 with codec id 0
ac97_codec: AC97 Audio codec, id: ADS116 (Unknown)
i810_audio: AC'97 codec 0 supports AMAP, total channels = 2