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| Error Downloading Packages: ncurses-libs-5.7-4.20090207.el6.x86_64: failure: Packages/ncurses-libs-5.7-4.20090207.el6.x86_64.rpm from base: [Errno 256] No more mirrors to try.
 ncurses-devel-5.7-4.20090207.el6.x86_64: failure: Packages/ncurses-devel-5.7-4.20090207.el6.x86_64.rpm from base: [Errno 256] No more mirrors to try.
 ncurses-base-5.7-4.20090207.el6.x86_64: failure: Packages/ncurses-base-5.7-4.20090207.el6.x86_64.rpm from base: [Errno 256] No more mirrors to try.
 
 Loaded plugins: fastestmirror
 Loading mirror speeds from cached hostfile
 * base: centos.mirror.rafal.ca
 * extras: centos.ca-west.mirror.fullhost.io
 * updates: centos.les.net
 Setting up Install Process
 Package curl-7.19.7-53.el6_9.x86_64 already installed and latest version
 Nothing to do
 Loaded plugins: fastestmirror
 Loading mirror speeds from cached hostfile
 * base: centos.mirror.rafal.ca
 * extras: centos.ca-west.mirror.fullhost.io
 * updates: centos.les.net
 Setting up Install Process
 Resolving Dependencies
 --> Running transaction check
 ---> Package libcurl-devel.x86_64 0:7.19.7-53.el6_9 will be installed
 --> Processing Dependency: libidn-devel for package: libcurl-devel-7.19.7-53.el6_9.x86_64
 --> Processing Dependency: automake for package: libcurl-devel-7.19.7-53.el6_9.x86_64
 --> Running transaction check
 ---> Package automake.noarch 0:1.11.1-4.el6 will be installed
 --> Processing Dependency: perl >= 5.006 for package: automake-1.11.1-4.el6.noarch
 --> Processing Dependency: perl >= 5.005_03 for package: automake-1.11.1-4.el6.noarch
 --> Processing Dependency: perl >= 5.005 for package: automake-1.11.1-4.el6.noarch
 --> Processing Dependency: perl >= 5.000 for package: automake-1.11.1-4.el6.noarch
 --> Processing Dependency: autoconf >= 2.62 for package: automake-1.11.1-4.el6.noarch
 --> Processing Dependency: perl(vars) for package: automake-1.11.1-4.el6.noarch
 --> Processing Dependency: perl(strict) for package: automake-1.11.1-4.el6.noarch
 --> Processing Dependency: perl(constant) for package: automake-1.11.1-4.el6.noarch
 --> Processing Dependency: perl(POSIX) for package: automake-1.11.1-4.el6.noarch
 --> Processing Dependency: perl(IO::File) for package: automake-1.11.1-4.el6.noarch
 --> Processing Dependency: perl(Getopt:
  ong) for package: automake-1.11.1-4.el6.noarch --> Processing Dependency: perl(File::stat) for package: automake-1.11.1-4.el6.noarch
 --> Processing Dependency: perl(File::Spec) for package: automake-1.11.1-4.el6.noarch
 --> Processing Dependency: perl(File::Copy) for package: automake-1.11.1-4.el6.noarch
 --> Processing Dependency: perl(File::Compare) for package: automake-1.11.1-4.el6.noarch
 --> Processing Dependency: perl(File::Basename) for package: automake-1.11.1-4.el6.noarch
 --> Processing Dependency: perl(Exporter) for package: automake-1.11.1-4.el6.noarch
 --> Processing Dependency: perl(Errno) for package: automake-1.11.1-4.el6.noarch
 --> Processing Dependency: perl(DynaLoader) for package: automake-1.11.1-4.el6.noarch
 --> Processing Dependency: perl(Cwd) for package: automake-1.11.1-4.el6.noarch
 --> Processing Dependency: perl(Carp) for package: automake-1.11.1-4.el6.noarch
 --> Processing Dependency: /usr/bin/perl for package: automake-1.11.1-4.el6.noarch
 ---> Package libidn-devel.x86_64 0:1.18-2.el6 will be installed
 --> Running transaction check
 ---> Package autoconf.noarch 0:2.63-5.1.el6 will be installed
 ---> Package perl.x86_64 4:5.10.1-144.el6 will be installed
 --> Processing Dependency: perl-libs = 4:5.10.1-144.el6 for package: 4:perl-5.10.1-144.el6.x86_64
 --> Processing Dependency: perl-libs for package: 4:perl-5.10.1-144.el6.x86_64
 --> Processing Dependency: perl(version) for package: 4:perl-5.10.1-144.el6.x86_64
 --> Processing Dependency: perl(Pod::Simple) for package: 4:perl-5.10.1-144.el6.x86_64
 --> Processing Dependency: perl(Module:
  luggable) for package: 4:perl-5.10.1-144.el6.x86_64 --> Processing Dependency: libperl.so()(64bit) for package: 4:perl-5.10.1-144.el6.x86_64
 --> Running transaction check
 ---> Package perl-Module-Pluggable.x86_64 1:3.90-144.el6 will be installed
 ---> Package perl-Pod-Simple.x86_64 1:3.13-144.el6 will be installed
 --> Processing Dependency: perl(Pod::Escapes) >= 1.04 for package: 1:perl-Pod-Simple-3.13-144.el6.x86_64
 ---> Package perl-libs.x86_64 4:5.10.1-144.el6 will be installed
 ---> Package perl-version.x86_64 3:0.77-144.el6 will be installed
 --> Running transaction check
 ---> Package perl-Pod-Escapes.x86_64 1:1.04-144.el6 will be installed
 --> Finished Dependency Resolution
 
 Dependencies Resolved
 
 ================================================================================
 Package                   Arch       Version                 Repository   Size
 ================================================================================
 Installing:
 libcurl-devel             x86_64     7.19.7-53.el6_9         updates     247 k
 Installing for dependencies:
 autoconf                  noarch     2.63-5.1.el6            base        781 k
 automake                  noarch     1.11.1-4.el6            base        550 k
 libidn-devel              x86_64     1.18-2.el6              base        137 k
 perl                      x86_64     4:5.10.1-144.el6        base         10 M
 perl-Module-Pluggable     x86_64     1:3.90-144.el6          base         41 k
 perl-Pod-Escapes          x86_64     1:1.04-144.el6          base         33 k
 perl-Pod-Simple           x86_64     1:3.13-144.el6          base        213 k
 perl-libs                 x86_64     4:5.10.1-144.el6        base        579 k
 perl-version              x86_64     3:0.77-144.el6          base         52 k
 
 Transaction Summary
 ================================================================================
 Install      10 Package(s)
 
 Total download size: 13 M
 Installed size: 40 M
 Downloading Packages:
 http://centos.mirror.rafal.ca/6. ... 5.1.el6.noarch.rpm: [Errno 14] PYCURL ERROR 7 - "Failed to connect to 2604:1500:f001:0:216:3eff:fe3f:746b: Network is unreachable"
 Trying other mirror.
 http://centos.westmancom.com/6.9 ... 5.1.el6.noarch.rpm: [Errno 14] PYCURL ERROR 7 - "Failed to connect to 2607:0:2:1:216:36:128:35: Network is unreachable"
 Trying other mirror.
 http://mirror.csclub.uwaterloo.c ... 5.1.el6.noarch.rpm: [Errno 14] PYCURL ERROR 7 - "Failed to connect to 2620:101:f000:4901:c5c:0:f:1055: Network is unreachable"
 编译了几个小时
 
 
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