Added IPv6 section

  with = or :. Comments can be used within the file. If the first letter on a

  line is a '#'-letter the rest of the line is treated as a comment.

  If you want the parameter to contain spaces, you must inclose the entire

  If you want the parameter to contain spaces, you must enclose the entire

  parameter within double quotes ("). Within those quotes, you specify a

  quote as \".

FTP and firewalls

  The FTP protocol requires one of the involved parties to open a second

  connction as soon as data is about to get transfered. There are two ways to

  connection as soon as data is about to get transfered. There are two ways to

  do this.

  The default way for curl is to issue the PASV command which causes the

    curl -T local1 ftp://ftp.com/moo.exe -T local2 ftp://ftp.com/moo2.txt

IPv6

  curl will connect to a server with IPv6 when a host lookup returns an IPv6

  address and fall back to IPv4 if the connection fails. The --ipv4 and --ipv6

  options can specify which address to use when both are available. IPv6

  addresses can also be specified directly in URLs using the syntax:

    http://[2001:1890:1112:1::20]/overview.html

  When this style is used, the -g option must be given to stop curl from

  interpreting the square brackets as special globbing characters.  Link local

  and site local addresses including a scope identifier, such as fe80::1234%1,

  may also be used, but the scope portion must be numeric and the percent

  character must be URL escaped. The previous example in an SFTP URL might

  look like:

    sftp://[fe80::1234%251]/

MAILING LISTS

  For your convenience, we have several open mailing lists to discuss curl,