  <varlistentry>
  <term><emphasis remap='B'>rekeymargin</emphasis></term>
  <listitem>
<para>how long before connection expiry or keying-channel expiry
should attempts to
negotiate a replacement
begin; acceptable values as for
<emphasis remap='B'>salifetime</emphasis>
(default
<emphasis remap='B'>9m</emphasis>).
Relevant only locally, other end need not agree on it.</para>
  </listitem>
  </varlistentry>
