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Web page:
<a class="moz-txt-link-freetext" href="https://kb.isc.org/article/AA-00502/0/A-Basic-Guide-to-Configuring-DHCP-Failover.htmlge">https://kb.isc.org/article/AA-00502/0/A-Basic-Guide-to-Configuring-DHCP-Failover.htmlge</a>:
<a class="moz-txt-link-freetext"
href="http://www.ipamworldwide.com/ipam/dhcp-declare-failover.html"></a><br>
<br>
The ports used in the fail-over example are not necessarily "wrong"
but should<br>
reflect the ports already assigned for fail-over communication:<br>
<font color="#993300"><tt>dhcp-failover 647/tcp #
DHCP Failover</tt><tt><br>
</tt><tt>dhcp-failover 647/udp # DHCP Failover</tt><tt><br>
</tt><tt>dhcp-failover2 847/tcp # dhcp-failover 2</tt><tt><br>
</tt><tt>dhcp-failover2 847/udp # dhcp-failover 2</tt><tt><br>
</tt></font><br>
Also, selinux on Red Hat systems allows those ports without creating
an exception:<br>
<font color="#993300"><tt>[0:root@c3po dhcp]$ semanage port -l |
grep dhcpd</tt><tt><br>
</tt><tt>dhcpd_port_t tcp 547, 548, 647,
847, 7911</tt><tt><br>
</tt><tt>dhcpd_port_t udp 67, 547, 548,
647, 847</tt><tt><br>
</tt></font><br>
Thanks for the online documentation. I'm hoping to improve it just
a little bit.<br>
<br>
Bill<br>
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