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<base href="https://bugzilla.netfilter.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - ipset wrongly blocking undefined ranges and not blocking ranges that are defined"
href="https://bugzilla.netfilter.org/show_bug.cgi?id=1719">1719</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>ipset wrongly blocking undefined ranges and not blocking ranges that are defined
</td>
</tr>
<tr>
<th>Product</th>
<td>ipset
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
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<th>OS</th>
<td>RedHat Linux
</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>default
</td>
</tr>
<tr>
<th>Assignee</th>
<td>netfilter-buglog@lists.netfilter.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>raymi.coevan@gmail.com
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=727" name="attach_727" title="ipset blacklist (1881 entries)">attachment 727</a> <a href="attachment.cgi?id=727&action=edit" title="ipset blacklist (1881 entries)">[details]</a></span>
ipset blacklist (1881 entries)
As used version is not available in above version list: ipset v6.29, protocol
version: 6. OS is CentOS (RHEL).
$ ipset -L -n
blacklist
$ ipset -L -t
Name: blacklist
Type: hash:net
Revision: 6
Header: family inet hashsize 1024 maxelem 65536
Size in memory: 57600
References: 1
Number of entries: 1881
$ ipset test blacklist 108.174.0.158
108.174.0.158 is in set blacklist.
$ ipset test blacklist 108.174.1.10
108.174.1.10 is in set blacklist.
$ ipset test blacklist 108.174.8.95
108.174.8.95 is in set blacklist.
Above tested IP addresses are not defined in blacklist but however blocked.
$ ipset test blacklist 108.174.8.95
108.174.8.95 is in set blacklist.
Now, on the opposite:
$ ipset test blacklist 203.55.21.150
203.55.21.150 is NOT in set blacklist.
However, it is defined via 203.55.21.0/24 and is NOT blocked which is critical.
Attached is the /etc/sysconfig/ipset blacklist.</pre>
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