Re: Systems are unable to use IPv6 during file transfer through FTP

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A: http://en.wikipedia.org/wiki/Top_post
Q: Were do I find info about this thing called top-posting?
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?

A: No.
Q: Should I leave quotations after my reply?

On Sat, Jun 02, 2007 at 12:46:47PM -0700, Irfan Ahmed wrote:
> I have used the following strace command and the output file is
> attached. Kindly look at it and give some suggestion to resolve the
> problem
> 
> strace -o strace.txt ftp 210.108.194.1

You told the FTP client to connect to an IPv4 address, so no, the
client won't use an IPv6 address. No surprise here.

> execve("/usr/kerberos/bin/ftp", ["ftp", "210.107.195.168"], [/* 43 vars */]) = 0

[...]

> socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3

IPv4 socket.

> connect(3, {sa_family=AF_INET, sin_port=htons(21), sin_addr=inet_addr("210.107.195.168")}, 16) = 0

Connect to the IPv4 address you gave on the command line.

Just give the FTP client the IPv6 address of your server, that should
work (if the FTP client understands IPv6).


Erik

- -- 
They're all fools. Don't worry. Darwin may be slow, but he'll
eventually get them. -- Matthew Lammers in alt.sysadmin.recovery
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