Date: Tue, 31 Aug 1999 15:41:30 -0400 (EDT) From: George Uhl <uhl@mamba-e.gsfc.nasa.gov> To: uhl@mamba-e.gsfc.nasa.gov, ru@ucb.crimea.ua Cc: freebsd-questions@FreeBSD.ORG Subject: Re: natd and multicast tunnel Message-ID: <199908311941.PAA14980@mamba-e.gsfc.nasa.gov>
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--7185_3182-72d3_235-36f5_771a Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-MD5: 1gGv+v/XrzhERMPuPleeeg== X-Sun-Data-Type: text > > I can run an sdr session on the back-end LAN host while > > running mrouted and natd and receive session advertisements. > > However, when I join a multicast session, my router's kernel > > panics with a page fault somewhere in the div_input function > > of /sys/netinet/ip_divert.c. div_input is called by > > ip_output. > > > Could you please provide a backtrace of the kernel panic? > I would if kgdb worked like advertised for FreeBSD 3.2. I'd prefer not having to write down the entire backtrace from the ddb output. I have a vmcore file in /var/crash and I compiled the kernel with the -g option. However when I do a backtrace command in kgdb, kgdb responds with a "No Stack" message. > > When I run mrouted stand-alone (i.e., without natd) the > > back-end host can join a session without crashing the router. > > I haven't tried to source multicast traffic from the > > back-end host since that should require natd to translate > > the source address. Is there a way to bypass natd for > > incoming tunneled multicast traffic? Outgoing multicast > > streams would still need to be translated prior to > > tunneling, right? > > > Please send me your kernel config, the output of `netstat -rn' and > how do you start natd(8). Are you running natd(8) with -reverse? > natd is started from rc.conf without the -reverse option. It uses the -n option over interface xl0. ------------------------- netstat -rn output: Internet: Destination Gateway Flags Refs Use Netif Expire default 24.6.133.1 UGSc 9 20652 xl0 24.6.133/24 link#1 UC 0 0 xl0 24.6.133.1 8:0:3e:17:78:23 UHLW 9 8 xl0 1096 127.0.0.1 127.0.0.1 UH 0 4 lo0 192.168.1 link#2 UC 0 0 ed0 192.168.1.1 0:40:5:6d:a6:44 UHLW 0 2 lo0 192.168.1.2 0:60:8:d0:69:c0 UHLW 0 2 ed0 1197 --------------------------- kernel config file is provided as an attachment. Thanks, George Uhl --7185_3182-72d3_235-36f5_771a Content-Type: application/octet-stream Content-Transfer-Encoding: 7bit Content-MD5: E3SXjQqcUvruEtqvWq1VSA== Content-Description: my.kernel.conf # # GENERIC -- Generic machine with WD/AHx/NCR/BTx family disks # # For more information read the handbook part System Administration -> # Configuring the FreeBSD Kernel -> The Configuration File. # The handbook is available in /usr/share/doc/handbook or online as # latest version from the FreeBSD World Wide Web server # <URL:http://www.FreeBSD.ORG/>; # # An exhaustive list of options and more detailed explanations of the # device lines is present in the ./LINT configuration file. If you are # in doubt as to the purpose or necessity of a line, check first in LINT. # # $Id: GENERIC,v 1.143.2.12 1999/05/14 15:12:26 jkh Exp $ machine "i386" cpu "I386_CPU" cpu "I486_CPU" cpu "I586_CPU" cpu "I686_CPU" ident GENERIC maxusers 32 options MATH_EMULATE #Support for x87 emulation options INET #InterNETworking options FFS #Berkeley Fast Filesystem options FFS_ROOT #FFS usable as root device [keep this!] options MFS #Memory Filesystem options MFS_ROOT #MFS usable as root device, "MFS" req'ed options NFS #Network Filesystem options NFS_ROOT #NFS usable as root device, "NFS" req'ed options MSDOSFS #MSDOS Filesystem options NTFS #NTFS Filesystem options "CD9660" #ISO 9660 Filesystem options "CD9660_ROOT" #CD-ROM usable as root. "CD9660" req'ed options PROCFS #Process filesystem options "COMPAT_43" #Compatible with BSD 4.3 [KEEP THIS!] options SCSI_DELAY=15000 #Be pessimistic about Joe SCSI device options UCONSOLE #Allow users to grab the console options FAILSAFE #Be conservative options USERCONFIG #boot -c editor options VISUAL_USERCONFIG #visual boot -c editor options MROUTING options USER_LDT #allow user-level control of i386 ldt config kernel root on wd0 # To make an SMP kernel, the next two are needed #options SMP # Symmetric MultiProcessor Kernel #options APIC_IO # Symmetric (APIC) I/O # Optionally these may need tweaked, (defaults shown): #options NCPU=2 # number of CPUs #options NBUS=4 # number of busses #options NAPIC=1 # number of IO APICs #options NINTR=24 # number of INTs controller isa0 #controller pnp0 controller eisa0 controller pci0 controller fdc0 at isa? port "IO_FD1" bio irq 6 drq 2 disk fd0 at fdc0 drive 0 disk fd1 at fdc0 drive 1 options "CMD640" # work around CMD640 chip deficiency controller wdc0 at isa? port "IO_WD1" bio irq 14 disk wd0 at wdc0 drive 0 disk wd1 at wdc0 drive 1 controller wdc1 at isa? port "IO_WD2" bio irq 15 disk wd2 at wdc1 drive 0 disk wd3 at wdc1 drive 1 options ATAPI #Enable ATAPI support for IDE bus options ATAPI_STATIC #Don't do it as an LKM device acd0 #IDE CD-ROM device wfd0 #IDE Floppy (e.g. LS-120) # A single entry for any of these controllers (ncr, ahb, ahc) is # sufficient for any number of installed devices. controller ncr0 controller ahb0 controller ahc0 controller isp0 # This controller offers a number of configuration options, too many to # document here - see the LINT file in this directory and look up the # dpt0 entry there for much fuller documentation on this. controller dpt0 controller adv0 at isa? port ? cam irq ? controller adw0 controller bt0 at isa? port ? cam irq ? controller aha0 at isa? port ? cam irq ? controller scbus0 device da0 device sa0 device pass0 device cd0 #Only need one of these, the code dynamically grows device wt0 at isa? port 0x300 bio irq 5 drq 1 #device mcd0 at isa? port 0x300 bio irq 10 controller matcd0 at isa? port 0x230 bio device scd0 at isa? port 0x230 bio # atkbdc0 controlls both the keyboard and the PS/2 mouse controller atkbdc0 at isa? port IO_KBD tty device atkbd0 at isa? tty irq 1 device psm0 at isa? tty irq 12 device vga0 at isa? port ? conflicts # splash screen/screen saver pseudo-device splash # syscons is the default console driver, resembling an SCO console device sc0 at isa? tty # Enable this and PCVT_FREEBSD for pcvt vt220 compatible console driver #device vt0 at isa? tty #options XSERVER # support for X server #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 device npx0 at isa? port IO_NPX irq 13 # # Laptop support (see LINT for more options) # device apm0 at isa? disable flags 0x31 # Advanced Power Management # PCCARD (PCMCIA) support #controller card0 #device pcic0 at card? #device pcic1 at card? device sio0 at isa? port "IO_COM1" flags 0x10 tty irq 4 device sio1 at isa? port "IO_COM2" tty irq 3 device sio2 at isa? disable port "IO_COM3" tty irq 5 device sio3 at isa? disable port "IO_COM4" tty irq 9 # Parallel port device ppc0 at isa? port? flags 0x40 net irq 7 controller ppbus0 device lpt0 at ppbus? device plip0 at ppbus? device ppi0 at ppbus? #controller vpo0 at ppbus? # # The following Ethernet NICs are all PCI devices. # #device ax0 # ASIX AX88140A #device de0 # DEC/Intel DC21x4x (``Tulip'') #device fxp0 # Intel EtherExpress PRO/100B (82557, 82558) #device mx0 # Macronix 98713/98715/98725 (``PMAC'') #device pn0 # Lite-On 82c168/82c169 (``PNIC'') #device rl0 # RealTek 8129/8139 #device tl0 # Texas Instruments ThunderLAN #device tx0 # SMC 9432TX (83c170 ``EPIC'') #device vr0 # VIA Rhine, Rhine II #device vx0 # 3Com 3c590, 3c595 (``Vortex'') #device wb0 # Winbond W89C840F device xl0 # 3Com 3c90x (``Boomerang'', ``Cyclone'') # Order is important here due to intrusive probes, do *not* alphabetize # this list of network interfaces until the probes have been fixed. # Right now it appears that the ie0 must be probed before ep0. See # revision 1.20 of this file. device ed0 at isa? port 0x280 net irq 3 iomem 0xd8000 #device ie0 at isa? port 0x300 net irq 10 iomem 0xd0000 #device ep0 at isa? port 0x300 net irq 10 #device ex0 at isa? port? net irq? #device fe0 at isa? port 0x300 net irq ? #device le0 at isa? port 0x300 net irq 5 iomem 0xd0000 #device lnc0 at isa? port 0x280 net irq 10 drq 0 #device ze0 at isa? port 0x300 net irq 10 iomem 0xd8000 #device zp0 at isa? port 0x300 net irq 10 iomem 0xd8000 #device cs0 at isa? port 0x300 net irq ? #GDU - sound card device pcm0 at isa? port ? tty irq 7 drq 4 flags 0x0 pseudo-device loop pseudo-device ether pseudo-device sl 1 pseudo-device ppp 1 pseudo-device tun 1 pseudo-device disc 1 pseudo-device pty 96 pseudo-device gzip # Exec gzipped a.out's # KTRACE enables the system-call tracing facility ktrace(2). # This adds 4 KB bloat to your kernel, and slightly increases # the costs of each syscall. options KTRACE #kernel tracing # This provides support for System V shared memory and message queues. # options SYSVSHM options SYSVMSG options SYSVSEM #options DDB # The `bpfilter' pseudo-device enables the Berkeley Packet Filter. Be # aware of the legal and administrative consequences of enabling this # option. The number of devices determines the maximum number of # simultaneous BPF clients programs runnable. pseudo-device bpfilter 4 #Berkeley packet filter # For nat options IPFIREWALL #firewall options IPDIVERT #divert sockets --7185_3182-72d3_235-36f5_771a-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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