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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - mapping to adjacent ranges is causing error in kernel 5.6, kernel 5.5 works fine"
   href="https://bugzilla.netfilter.org/show_bug.cgi?id=1417">1417</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>mapping to adjacent ranges is causing error in kernel 5.6, kernel 5.5 works fine
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>nftables
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86_64
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>critical
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P5
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>kernel
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>pablo@netfilter.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>karel@unitednetworks.cz
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=588" name="attach_588" title="example of adjacent ranges causing error">attachment 588</a> <a href="attachment.cgi?id=588&action=edit" title="example of adjacent ranges causing error">[details]</a></span>
example of adjacent ranges causing error

After upgrading kernel from 5.5 to 5.6.2 our ruleset which includes mapping
packet sizes to counters fails to load. Problem is in adjacent ranges:

This fails (with File exists message):

counter name ip length map { 0-100 : "c1", 101-200 : "c2" }

After increasing start of second range by one it loads ok:

counter name ip length map { 0-100 : "c1", 102-200 : "c2" }

See attached examples.



Probably same bug as:

<a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - adjacent ip ranges in vmap causing error"
   href="show_bug.cgi?id=1415">https://bugzilla.netfilter.org/show_bug.cgi?id=1415</a></pre>
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