2.3.99pre3: multiple IP packets sent with ID 0

From: Russell King (rmk@arm.linux.org.uk)
Date: Sat Mar 25 2000 - 10:35:47 EST

Hi,

While investigating my NFS problems on 2.3.99pre3, I decided to look at what
is contained within the packets:

root@tasslehoff:[/root]:<1002> tcpdump -i eth0 port 2049 -s 1514 -x and host tasslehoff
tcpdump: listening on eth0
14:59:48.568709 tasslehoff.arm.linux.org.uk.3188470476 > flint.arm.linux.org.uk.nfs: 124 read fh Unknown/1 4096 bytes @ 3092480 (DF)
                         4500 0098 0000 4000 4011 b8fb c0a8 0005
                         c0a8 0004 031f 0801 0084 8af9 be0c 32cc
                         0000 0000 0000 0002 0001 86a3 0000 0002
                         0000 0006 0000 0001 0000 0028 0000 0bc3
                         0000 000a 7461 7373 6c65 686f 6666 0000
                         0000 01f5 0000 01f5 0000 0002 0000 01f5
                         0000 0064 0000 0000 0000 0000 caba ebfe
                         71f1 0300 d9f0 0300 0603 0000 0603 0000
                         0200 0000 c4f3 0fdb 0000 0000 002f 3000
                         0000 1000 0000 1000
14:59:48.638697 tasslehoff.arm.linux.org.uk.3456905932 > flint.arm.linux.org.uk.nfs: 124 read fh Unknown/1 4096 bytes @ 3158016 (DF)
                         4500 0098 0000 4000 4011 b8fb c0a8 0005
                         c0a8 0004 031f 0801 0084 7af8 ce0c 32cc
                         0000 0000 0000 0002 0001 86a3 0000 0002
                         0000 0006 0000 0001 0000 0028 0000 0bc3
                         0000 000a 7461 7373 6c65 686f 6666 0000
                         0000 01f5 0000 01f5 0000 0002 0000 01f5
                         0000 0064 0000 0000 0000 0000 caba ebfe
                         71f1 0300 d9f0 0300 0603 0000 0603 0000
                         0200 0000 c4f3 0fdb 0000 0000 0030 3000
                         0000 1000 0000 1000

2 packets received by filter
0 packets dropped by kernel

As you can see, the IP headers for both of these contain an ID of zero.
I just tested to see if it was specific to NFS, but the SSH connection I'm
using to type this message over also has every packet originated from
2.3.99pre3 containing ID 0.

Aren't the IP IDs supposed to cycle?
   _____
  |_____| ------------------------------------------------- ---+---+-
  | | Russell King rmk@arm.linux.org.uk --- ---
  | | | | http://www.arm.linux.org.uk/~rmk/aboutme.html / / |
  | +-+-+ --- -+-
  / | THE developer of ARM Linux |+| /|\
 / | | | --- |
    +-+-+ ------------------------------------------------- /\\\ |

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This archive was generated by hypermail 2b29 : Fri Mar 31 2000 - 21:00:15 EST