title: Centos 6 yum update failure
body: <p>trying a simple yum update logged as root via Putty gives me:</p>
  
  <pre><code>---&gt; Package python-paramiko.noarch 0:1.12.4-1.el7 will be an update
  --&gt; Processing Dependency: python(abi) = 2.7 for package: python-paramiko-1.124-1.el7.noarch
  --&gt; Processing Conflict: libdb4-4.8.30-13.el7.x86_64 conflicts filesystem &lt; 3
  --&gt; Finished Dependency Resolution
  Error: Package: cyrus-sasl-lib-2.1.23-15.el6.x86_64 (@base)
             Requires: libdb-4.7.so()(64bit)
             Removing: db4-4.7.25-18.el6_4.x86_64 (@base)
                 libdb-4.7.so()(64bit)
             Obsoleted By: libdb4-4.8.30-13.el7.x86_64 (epel)
                 Not found
  Error: Package: python-paramiko-1.12.4-1.el7.noarch (epel)
             Requires: python(abi) = 2.7
             Installed: python-2.6.6-52.el6.x86_64 (@updates)
                 python(abi) = 2.6
  
   You could try using --skip-broken to work around the problem
   You could try running: rpm -Va --nofiles --nodigest
  </code></pre>
  
  <p>the expection is longer but stack can't let me put everything without write the same quantity of text...
  Anyways...
  I really can't understand why it does that conflict problem...
  can anybody point at least me to the right direction?</p>
  
  <p>edit: if i launch yum update --skip-broken</p>
  
  <pre><code>Packages skipped because of dependency problems:
      libdb4-4.8.30-13.el7.x86_64 from epel
      libdb4-cxx-4.8.30-13.el7.x86_64 from epel
      libdb4-devel-4.8.30-13.el7.x86_64 from epel
      libdb4-utils-4.8.30-13.el7.x86_64 from epel
      python-crypto-2.6.1-1.el7.x86_64 from epel
      python-ecdsa-0.11-3.el7.noarch from epel
      python-paramiko-1.12.4-1.el7.noarch from epel
  </code></pre>
  
  <p>thanks</p>