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Hi,<br>
<br>
we are for some time now moving from 'ddns-update-style interim' to
'ddns-update-style standard'. In the mean time most of the TXT RR in
DNS have been replaced by DHCID RR. We are facing however a
difference in the leases files of the two fail-over members which we
do not understand.<br>
<div class="moz-signature"><br>
The lease-entry of IP phone it1001 at DHCP-server dhcp00 is:<br>
<br>
lease 137.17.159.230 {<br>
starts 2 2018/08/14 04:55:14;<br>
ends 2 2018/08/14 17:25:14;<br>
tstp 6 2017/12/16 05:46:45;<br>
tsfp 2 2018/08/14 23:40:14;<br>
atsfp 2 2018/08/14 23:40:14;<br>
cltt 5 2017/12/15 11:01:45;<br>
binding state active;<br>
next binding state expired;<br>
hardware ethernet 64:16:7f:03:b2:08;<br>
set ddns-rev-name = "230.159.17.137.in-addr.arpa.";<br>
set ddns-txt = "0001e0b227339ca36be2eb578af5a9f3c8";<br>
set ddns-fwd-name = "it1001.nlr.nl.";<br>
set network-location = "nlrlnx113;ge-0/0/45;224";<br>
set vendor-string = "Polycom-VVX601";<br>
set nlr-site = "asd";<br>
set vendor-class-identifier = "Polycom-VVX601";<br>
option agent.circuit-id "ge-0/0/45.0:224";<br>
option agent.remote-id "nlrlnx113";<br>
client-hostname "Polycom_64167f03b208";<br>
}<br>
<br>
The corresponding entry in de leases-file of server dhcp01 is:<br>
<br>
lease 137.17.159.230 {<br>
starts 2 2018/08/14 04:55:14;<br>
ends 2 2018/08/14 17:25:14;<br>
tstp 2 2018/08/14 23:40:14;<br>
tsfp 2 2018/08/14 23:40:14;<br>
atsfp 2 2018/08/14 23:40:14;<br>
cltt 2 2018/08/14 04:55:14;<br>
binding state active;<br>
next binding state expired;<br>
hardware ethernet 64:16:7f:03:b2:08;<br>
set ddns-rev-name = "230.159.17.137.in-addr.arpa.";<br>
set ddns-fwd-name = "it1001.nlr.nl.";<br>
set vendor-class-identifier = "Polycom-VVX601";<br>
set nlr-site = "asd";<br>
set vendor-string = "Polycom-VVX601";<br>
set network-location = "nlrlnx113;ge-0/0/45;224";<br>
set ddns-dhcid =
"\000\000\001UjIl`j\016\213\333t\330\214\350\005\204Wu\001\333#\222\3622@\234t\321\372\343+z\031";<br>
option agent.circuit-id "ge-0/0/45.0:224";<br>
option agent.remote-id "nlrlnx113";<br>
client-hostname "Polycom_64167f03b208";<br>
}<br>
<br>
The logfile at server dhcp00 does not contain any entries for this
IP phone. The log file at server dhcp01 contains the following
lines:<br>
<br>
Aug 14 06:55:14 soda134u dhcpd: DHCPREQUEST for 137.17.159.230
from 64:16:7f:03:b2:08 (Polycom_64167f03b208) via bond0<br>
Aug 14 06:55:14 soda134u dhcpd: DHCPACK on 137.17.159.230 to
64:16:7f:03:b2:08 (Polycom_64167f03b208) via bond0<br>
Aug 14 06:55:14 soda134u dhcpd: Added new forward map from
it1001.nlr.nl. to 137.17.159.230<br>
Aug 14 06:55:14 soda134u dhcpd: Added reverse map from
230.159.17.137.in-addr.arpa. to it1001.nlr.nl.<br>
<br>
We are using ISC DHCP Server 4.4.1 at both servers.<br>
<br>
Is this difference in some way 'normal'? Is it possibly a remnant
of the old days, as the IP phone might have not been requesting a
new IP address since the introduction of 'ddns-update-style
standard'? And most importantly: can this difference be undone,
without the need to force all devices with a long uptime to
request a new IP address?<br>
<br>
Wim Nelis.<br>
<br>
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