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<base href="https://bugzilla.netfilter.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - using the internal lookup table vs. the local system's /etc/services (or so) generally prevents nft from working"
href="https://bugzilla.netfilter.org/show_bug.cgi?id=1269">1269</a>
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<th>Summary</th>
<td>using the internal lookup table vs. the local system's /etc/services (or so) generally prevents nft from working
</td>
</tr>
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<th>Product</th>
<td>nftables
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>Gentoo
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>blocker
</td>
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<th>Priority</th>
<td>P5
</td>
</tr>
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<th>Component</th>
<td>nft
</td>
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<th>Assignee</th>
<td>pablo@netfilter.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>d@zaitceff.me
</td>
</tr></table>
<p>
<div>
<pre>An old enough commit ccc5da470e76032f8e175920553516835efb30f1
(<a href="http://git.netfilter.org/nftables/commit/?id=ccc5da470e76032f8e175920553516835efb30f1">http://git.netfilter.org/nftables/commit/?id=ccc5da470e76032f8e175920553516835efb30f1</a>)
prevents the nft utility from using the host's _real_ list of known services
(e.g. from /etc/services). In my case - the latest Gentoo - nft doesn't know
anymore what are the port numbers of imap, smtps and ms-wbt-server. While all
of them are (legally!:) listed in /etc/services. These three services are just
my exact case, while the difference between the general (not Gentoo-specific)
/etc/services content and the hardcoded inet_service_tbl (which was created
from the patch author's /etc/services of some time and from some Ubuntu distro)
are just _big_.
As for me, the whole idea to hardcode the list of services was erroneous,
because the local list of services is not even the distro-specific entity, but
just the local admin's possession. And nobody can know in advance the
somebody's service names and port numbers...
Example:
tcp dport imap ip daddr X.X.X.X counter dnat Y.Y.Y.Y
This line can't be used after the mentioned patch has been applied.</pre>
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