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<body><span class="vcard"><a class="email" href="mailto:pablo@netfilter.org" title="Pablo Neira Ayuso <pablo@netfilter.org>"> <span class="fn">Pablo Neira Ayuso</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED WONTFIX - ECN: --ecn-tcp-ece and --ecn-ip-ect is not supported"
href="https://bugzilla.netfilter.org/show_bug.cgi?id=928">bug 928</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
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<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
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<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>WONTFIX
</td>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED WONTFIX - ECN: --ecn-tcp-ece and --ecn-ip-ect is not supported"
href="https://bugzilla.netfilter.org/show_bug.cgi?id=928#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED WONTFIX - ECN: --ecn-tcp-ece and --ecn-ip-ect is not supported"
href="https://bugzilla.netfilter.org/show_bug.cgi?id=928">bug 928</a>
from <span class="vcard"><a class="email" href="mailto:pablo@netfilter.org" title="Pablo Neira Ayuso <pablo@netfilter.org>"> <span class="fn">Pablo Neira Ayuso</span></a>
</span></b>
<pre>We can match these via 'tcp flags'.
# nft --debug=netlink add rule x y tcp flags ecn,cwr
ip x y
[ payload load 1b @ network header + 9 => reg 1 ]
[ cmp eq reg 1 0x00000006 ]
[ payload load 1b @ transport header + 13 => reg 1 ]
[ bitwise reg 1 = (reg=1 & 0x000000c0 ) ^ 0x00000000 ]
[ cmp neq reg 1 0x00000000 ]
Closing.</pre>
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