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Date:      Sat, 11 Oct 2003 03:02:21 -0700
From:      "Aaron Burke" <aburke@nullplusone.com>
To:        <freebsd-questions@freebsd.org>
Subject:   Broken gif interface for IPV4 over IPV4 tunnel on FreeBSD 4.5-Release-P6
Message-ID:  <AMEMKJNMFLJCJDLFIEDBMENBEJAA.aburke@nullplusone.com>

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Hello Questions List,
(please cc, as I may not be on this list, (Too many daily messages))

	I have previously setup a gif interface on a box called GM
using pseudo-device gif. I have tried several things to get the
gif interface back up and working. I will list them all in this
email. On an other note, the kernel source files used to be
located in the default /usr/src/sys/ have been moved to
/a/usr/src/sys/ (RAID5 on 3ware IDE RAID controller). If anyone
is interested in the details of the move I can paste them in if
people are intersted. And for the conveiniance of the person that
has physical access to the box, I symlinked /a/usr/src/sys to
/usr/src/sys .

	The kernel was rebuilt the other day to add in support for
IPSEC and IPSEC_ESP to encrypt the connections. Since rebuilding
gif device no longer works. I have tried removing the IPSEC stuff
and rebuilding and go figure the gif device still doesnt work. So
I broke it, tried removing my changes, and its still broken.

I double-checked and "pseudo-device gif" is still in the kernel
config file.

I want to make it clear to everyone that I did have this working
in the past. I also dont have physical access to the box, so an
upgrade is not possible. (Plus, why upgrade something that has
worked in the past.)

And now for the problem:
gif0 does not show up in ifconfig, so I have tried creating the
device with methods that work on three other FreeBSD boxes
(4.8-stable from July 29th, 2003, and two 4.7-release boxes)
GM# ifconfig gif0 create
ifconfig: interface gif0 does not exist
Greenmantis# gifconfig gif0 local.public.ip.address remote.public.ip.address
gifconfig: interface gif0 does not exist
Greenmantis# ifconfig gif0 inet 10.1.1.2 192.168.0.2
ifconfig: interface gif0 does not exist

Where as on all of my other boxes, I dont get "gifconfig:
interface gif0 does not exist". It just silently creates the
device and returns me to the prompt.

I am really currious about why it worked before, but doesnt work now.
And to have other people double-check the kernel source file on
the busted machine, I will paste it here. Some confidential info has
been changed for privacy)

#
# GM - GM's kernel configuration file.
# $FreeBSD: src/sys/i386/conf/GENERIC,v 1.246.2.38 2002/01/25 17:41:40
murray Exp $

machine         i386
cpu             I686_CPU
ident           GM
maxusers        0

#makeoptions    DEBUG=-g                #Build kernel with gdb(1) debug
symbols

options         INET                    #InterNETworking
options         INET6                   #IPv6 communications protocols
options         FFS                     #Berkeley Fast Filesystem
options         FFS_ROOT                #FFS usable as root device [keep
this!]
options         SOFTUPDATES             #Enable FFS soft updates support
options         UFS_DIRHASH             #Improve performance on big
directories
options         MFS                     #Memory Filesystem
#options        MD_ROOT                 #MD is a potential root device
#options        NFS                     #Network Filesystem
#options        NFS_ROOT                #NFS usable as root device, NFS
required
options         MSDOSFS                 #MSDOS Filesystem
options         CD9660                  #ISO 9660 Filesystem
#options        CD9660_ROOT             #CD-ROM usable as root, CD9660
required
options         PROCFS                  #Process filesystem
options         COMPAT_43               #Compatible with BSD 4.3 [KEEP
THIS!]
#options        SCSI_DELAY=15000        #Delay (in ms) before probing SCSI
options         UCONSOLE                #Allow users to grab the console
options         USERCONFIG              #boot -c editor
options         VISUAL_USERCONFIG       #visual boot -c editor
options         KTRACE                  #ktrace(1) support
options         SYSVSHM                 #SYSV-style shared memory
options         SYSVMSG                 #SYSV-style message queues
options         SYSVSEM                 #SYSV-style semaphores
options         P1003_1B                #Posix P1003_1B real-time extensions
options         _KPOSIX_PRIORITY_SCHEDULING
options         ICMP_BANDLIM            #Rate limit bad replies
options         KBD_INSTALL_CDEV        # install a CDEV entry in /dev
options         SUIDDIR                 #SMB support, its my file, I can del
it

options         IPFIREWALL
options         IPDIVERT

# secure VPN functionallity (were added for IPSEC secure transport)
# options               IPSEC        #IP security
# options               IPSEC_ESP    #IP security (crypto; define w/ IPSEC)

# To make an SMP kernel, the next two are needed
#options        SMP                     # Symmetric MultiProcessor Kernel
#options        APIC_IO                 # Symmetric (APIC) I/O

device          isa
device          eisa
device          pci

# Floppy drives
device          fdc0    at isa? port IO_FD1 irq 6 drq 2
device          fd0     at fdc0 drive 0
device          fd1     at fdc0 drive 1

# ATA and ATAPI devices
device          ata0    at isa? port IO_WD1 irq 14
device          ata1    at isa? port IO_WD2 irq 15
device          ata
device          atadisk                 # ATA disk drives
device          atapicd                 # ATAPI CDROM drives
#device         atapifd                 # ATAPI floppy drives
#device         atapist                 # ATAPI tape drives
options         ATA_STATIC_ID           #Static device numbering

# SCSI peripherals
device          scbus           # SCSI bus (required)
#device         da              # Direct Access (disks)
#device         sa              # Sequential Access (tape etc)
device          cd              # CD
#device         pass            # Passthrough device (direct SCSI access)

# RAID controllers interfaced to the SCSI subsystem
#device         asr             # DPT SmartRAID V, VI and Adaptec SCSI RAID
#device         dpt             # DPT Smartcache - See LINT for options!
#device         mly             # Mylex AcceleRAID/eXtremeRAID

# RAID controllers
device          twe             # 3ware Escalade

# atkbdc0 controls both the keyboard and the PS/2 mouse
device          atkbdc0 at isa? port IO_KBD
device          atkbd0  at atkbdc? irq 1 flags 0x1
device          psm0    at atkbdc? irq 12

device          vga0    at isa?

# splash screen/screen saver
pseudo-device   splash

# syscons is the default console driver, resembling an SCO console
device          sc0     at isa? flags 0x100

# Enable this and PCVT_FREEBSD for pcvt vt220 compatible console driver
#device         vt0     at isa?
#options        XSERVER                 # support for X server on a vt
console
#options        FAT_CURSOR              # start with block cursor
# If you have a ThinkPAD, uncomment this along with the rest of the PCVT
lines
#options        PCVT_SCANSET=2          # IBM keyboards are non-std

# Floating point support - do not disable.
device          npx0    at nexus? port IO_NPX irq 13

# Power management support (see LINT for more options)
device          apm0    at nexus? disable flags 0x20 # Advanced Power
Management

# Serial (COM) ports
device          sio0    at isa? port IO_COM1 flags 0x10 irq 4
device          sio1    at isa? port IO_COM2 irq 3

# Parallel port
device          ppc0    at isa? irq 7
device          ppbus           # Parallel port bus (required)
device          lpt             # Printer
#device         plip            # TCP/IP over parallel
#device         ppi             # Parallel port interface device
#device         vpo             # Requires scbus and da


# PCI Ethernet NICs.
#device         de              # DEC/Intel DC21x4x (``Tulip'')
#device         txp             # 3Com 3cR990 (``Typhoon'')
#device         vx              # 3Com 3c590, 3c595 (``Vortex'')

# PCI Ethernet NICs that use the common MII bus controller code.
# NOTE: Be sure to keep the 'device miibus' line in order to use these NICs!
device          miibus          # MII bus support
device          fxp             # Intel EtherExpress PRO/100B (82557, 82558)

# Pseudo devices - the number indicates how many units to allocate.
pseudo-device   loop            # Network loopback
pseudo-device   ether           # Ethernet support
#pseudo-device  sl      1       # Kernel SLIP
#pseudo-device  ppp     1       # Kernel PPP
#pseudo-device  tun             # Packet tunnel.
pseudo-device   pty             # Pseudo-ttys (telnet etc)
#pseudo-device  md              # Memory "disks"
pseudo-device   gif             # IPv6 and IPv4 tunneling
#pseudo-device  faith   1       # IPv6-to-IPv4 relaying (translation)

# The `bpf' pseudo-device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
pseudo-device   bpf             #Berkeley packet filter

# USB support
#device         uhci            # UHCI PCI->USB interface
#device         ohci            # OHCI PCI->USB interface
#device         usb             # USB Bus (required)
#device         ugen            # Generic
#device         uhid            # "Human Interface Devices"
#device         ukbd            # Keyboard
#device         ulpt            # Printer
#device         umass           # Disks/Mass storage - Requires scbus and da
#device         ums             # Mouse
#device         uscanner        # Scanners
#device         urio            # Diamond Rio MP3 Player
# USB Ethernet, requires mii
#device         aue             # ADMtek USB ethernet
#device         cue             # CATC USB ethernet
#device         kue             # Kawasaki LSI USB ethernet




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