Date: Wed, 1 Nov 2000 17:19:17 -0600 (CST) From: R Beasley <ryanb@enteract.com> To: FreeBSD-gnats-submit@freebsd.org Subject: bin/22489: mass-aliasing of IPs to dc0 via ifconfig is unhappy Message-ID: <200011012319.eA1NJHY34630@ca-1.enteract.com>
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>Number: 22489
>Category: bin
>Synopsis: mass IP aliasing via ifconfig broken
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Nov 01 15:20:01 PST 2000
>Closed-Date:
>Last-Modified:
>Originator: R Beasley
>Release: FreeBSD 4.2-BETA i386
>Organization:
>Environment:
Copyright (c) 1992-2000 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD 4.2-BETA #0: Wed Nov 1 11:04:13 CST 2000
root@:/usr/obj/usr/src/sys/CA1
Timecounter "i8254" frequency 1193182 Hz
CPU: Pentium II/Pentium II Xeon/Celeron (451.03-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x652 Stepping = 2
Features=0x183fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CM
OV,PAT,PSE36,MMX,FXSR>
real memory = 536858624 (524276K bytes)
avail memory = 519471104 (507296K bytes)
Programming 24 pins in IOAPIC #0
IOAPIC #0 intpin 2 -> irq 0
IOAPIC #0 intpin 17 -> irq 11
IOAPIC #0 intpin 18 -> irq 10
IOAPIC #0 intpin 19 -> irq 12
FreeBSD/SMP: Multiprocessor motherboard
cpu0 (BSP): apic id: 1, version: 0x00040011, at 0xfee00000
cpu1 (AP): apic id: 0, version: 0x00040011, at 0xfee00000
io0 (APIC): apic id: 2, version: 0x00170011, at 0xfec00000
Preloaded elf kernel "kernel" at 0xc02cc000.
Preloaded userconfig_script "/boot/kernel.conf" at 0xc02cc09c.
Pentium Pro MTRR support enabled
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Intel 82443BX (440 BX) host to PCI bridge> on motherboard
pci0: <PCI bus> on pcib0
pcib1: <Intel 82443BX (440 BX) PCI-PCI (AGP) bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
isab0: <Intel 82371AB PCI to ISA bridge> at device 4.0 on pci0
isa0: <ISA bus> on isab0
pci0: <Intel PIIX4 ATA controller> at 4.1
pci0: <Intel 82371AB/EB (PIIX4) USB controller> at 4.2 irq 12
Timecounter "PIIX" frequency 3579545 Hz
p1: <Intel 82371AB Power management controller> port 0xe800-0xe80f at device
4.3 on pci0
ahc0: <Adaptec aic7890/91 Ultra2 SCSI adapter> port 0xd000-0xd0ff mem 0xe3000000
-0xe3000fff irq 12 at device 6.0 on pci0
aic7890/91: Wide Channel A, SCSI Id=7, 32/255 SCBs
dc0: <82c169 PNIC 10/100BaseTX> port 0xb800-0xb8ff mem 0xe2800000-0xe28000ff irq
12 at device 9.0 on pci0
dc0: Ethernet address: 00:a0:cc:39:eb:0a
miibus0: <MII bus> on dc0
ukphy0: <Generic IEEE 802.3u media interface> on miibus0
ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
dc1: <82c169 PNIC 10/100BaseTX> port 0xb400-0xb4ff mem 0xe2000000-0xe20000ff irq
10 at device 10.0 on pci0
dc1: Ethernet address: 00:a0:cc:39:eb:0e
miibus1: <MII bus> on dc1
ukphy1: <Generic IEEE 802.3u media interface> on miibus1
ukphy1: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
pci0: <S3 ViRGE graphics accelerator> at 11.0 irq 11
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
sc0: <System console> on isa0
sc0: VGA <8 virtual consoles, flags=0x200>
fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0
io0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
APIC_IO: Testing 8254 interrupt delivery
APIC_IO: routing 8254 via IOAPIC #0 intpin 2
Waiting 2 seconds for SCSI devices to settle
SMP: AP CPU #1 Launched!
- and -
FreeBSD testbed.enteract.com 4.1.1-STABLE FreeBSD 4.1.1-STABLE #0: Thu Oct 26 21:48:10 CDT 2000 root@testbed.enteract.com:/usr/src/sys/compile/TESTBED i386
(Duplicate dmesg info w/ exception of release.)
> Description:
(Note: This is my very first PR, so please bear with me. :)
(I haven't tested w/ SMP disabled yet, also haven't tested w/ non-dc cards.)
On this specific web server, there are over 700 IP addresses bound to
one NIC. Previously, binding all as aliases by processing a flat text
file w/o pacing between binds would leave all proper addreses bound as
necessary.
Currently, the same script/text file are in use. No error msgs are generated
and `ifconfig -a` output appears as normal. The local machine may ping
and transmit/recv to the bound addresses as expected. However, all outside
machines are unable to communicate with the 100th or so address on. ARP
cache flushes have been performed, etc, etc -- manually removing the alias
and rebinding seems to fix. Also, pacing with at least a 0.75-1 second
between binds seems to be OK as well.
Example:
file named "ips.ca-1" contains around 750 addresses in a text file like so:
207.134.2.21
139.83.24.76
207.229.127.6
216.80.193.224
(etc)
[root@ca-1][~] $ for tmp in `cat ips.ca-1`; do ifconfig dc0 inet $tmp netmask 255.255.255.255 alias; done
(IPs appear bound as expected. Addresses below only meant as examples.)
[root@ca-1][~] $ ifconfig -a
dc0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 207.229.143.13 netmask 0xffffff00 broadcast 207.229.143.255
inet 207.134.2.21 netmask 0xffffffff broadcast 207.134.2.21
inet 139.83.24.76 netmask 0xffffffff broadcast 139.83.24.76
inet 207.229.127.6 netmask 0xffffffff broadcast 207.229.127.6
inet 216.80.193.224 netmask 0xffffffff broadcast 216.80.193.224
[etc etc -snip-]
inet 193.28.82.99 netmask 0xffffffff broadcast 193.28.82.99
inet 84.38.19.32 netmask 0xffffffff broadcast 84.38.19.32
[ryanb@ca-1][~] $ ping 193.28.82.99
PING 193.28.82.99 (207.229.128.165): 56 data bytes
64 bytes from 193.28.82.99: icmp_seq=0 ttl=255 time=0.260 ms
64 bytes from 193.28.82.99: icmp_seq=1 ttl=255 time=0.048 ms
64 bytes from 193.28.82.99: icmp_seq=2 ttl=255 time=0.054 ms
^C
--- 193.28.82.99 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max/stddev = 0.048/0.121/0.260/0.099 ms
[ryanb@bjorn][~] $ ping 207.229.143.13
PING 207.229.143.13 (207.229.143.13): 56 data bytes
64 bytes from 207.229.143.13: icmp_seq=0 ttl=255 time=0.310 ms
64 bytes from 207.229.143.13: icmp_seq=1 ttl=255 time=0.026 ms
64 bytes from 207.229.143.13: icmp_seq=2 ttl=255 time=0.024 ms
[ryanb@bjorn][~] $ ping 193.28.82.99
PING 193.28.82.99 (216.80.6.226): 56 data bytes
^C
--- 193.28.82.99 ping statistics ---
4 packets transmitted, 0 packets received, 100% packet loss
(193.28.82.99 listed as [incomplete] in ARP table)
>Description:
>How-To-Repeat:
1) Get yourself a flat text file w/ a lot of addresses separated
by newlines.
2) As root, execute the following lame-o script:
#!/bin/sh
for tmp in `cat <filename>`; do ifconfig <device_here> inet $tmp netmask 255.255.255.255 alias; done
IPs will appear as being properly bound, yet are truely unusable to the
network outside of your machine.
>Fix:
The only work around I know of is pacing the act of boundin the IPs.
ie: inserting a "sleep 1" in the above script, which then works fine.
(In our situation, that drives the boot time to over 10 minutes.)
>Release-Note:
>Audit-Trail:
>Unformatted:
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