Messages in this thread | | | Date | Mon, 18 Feb 2002 15:08:28 -0500 (EST) | From | "Richard B. Johnson" <> | Subject | Re: weird ip sequence number |
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On Mon, 18 Feb 2002, Xinwen - Fu wrote:
> Hi, > Really weird! > > I have two linux machines with kernel 2.4.17. When I ping one > machine from the other machine, all the ping request ip packets have the > same sequnce number 0. The ping reply packets have different ip > sequence numbers. Moreover, when I send udp packets using general > socket programming, all the udp packets have the same sequence number 0. > > I use ethereal to check the packets. > > What's the problem? > > Thanks! >
The sequence numbers for 'ping' come from ping. They are not generated by the kernel.
`strace` [snipped] sendto(3, "\10\0\335\360\360T\0\0@^q<\202\34\v\0\10\t\n\v\f\r\16\17"..., |________ sequence NR
sendto(3, "\10\0\237\v\360T\1\0A^q<\277\1\v\0\10\t\n\v\f\r\16\17\20"..., |___________ sequence NR
Cheers, Dick Johnson
Penguin : Linux version 2.4.1 on an i686 machine (797.90 BogoMips).
I was going to compile a list of innovations that could be attributed to Microsoft. Once I realized that Ctrl-Alt-Del was handled in the BIOS, I found that there aren't any.
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