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Today's Topics:
1. Re: omshell error - 9216 exceeds max (255) for precision
(prasanth ns)
----------------------------------------------------------------------
Message: 1
Date: Sat, 25 Apr 2020 09:14:47 +0000 (UTC)
From: prasanth ns <p...@yahoo.com>
To: <dhcp-users@lists.isc.org>
Subject: Re: omshell error - 9216 exceeds max (255) for precision
Message-ID: <1073061060.92858.1587806087...@mail.yahoo.com>
Content-Type: text/plain; charset="utf-8"
> On Tuesday, March 31, 2020, 02:53:24 PM PDT, Bill Shirley
> <b...@c3po.polymerindustries.biz> wrote:
> You're giving it an IPv4 address but the routers and domain-name-servers
> options are IPv6 addresses.? You're> using a semi-colon as the separator
> instead of a dot. Generally, MTU is 1,500 or less.
Thanks Bill. Apologies for the delayed response. I corrected the IPs as you
suggested and tried to analyze the MTU issue a bit more. What I noticed is that
the issue is not just with the interface-mtu value, but with any number you
specify as part of the configuration on omshell. Here is another way I
reproduced it. This time with default-lease-time.
case1
# omshell> connectobj: <null>> new groupobj: group> set statements =
"default-lease-time=100;"? ? ? ? ? ? ?obj: groupstatements =
"default-lease-time=100;"> createobj: groupstatements =
"default-lease-time=100;"name = "ng38b7aa9835b226c0"
# cat /tmp/dhcpd.leases# The format of this file is documented in the
dhcpd.leases(5) manual page.# This lease file was written by isc-dhcp-4.4.2
# authoring-byte-order entry is generated, DO NOT DELETEauthoring-byte-order
little-endian;
group ng38b7aa9835b226c0 {??dynamic;? ? ? ??supersede server.default-lease-time
= 00;? ? ? ? << Incorrect value}
case 2
# omshell> connectobj: <null>> new groupobj: group> set statements =
"default-lease-time=99;"obj: groupstatements = "default-lease-time=99;">
createobj: groupstatements = "default-lease-time=99;"name = "ng38b7aac835b22c30"
# cat /tmp/dhcpd.leases# The format of this file is documented in the
dhcpd.leases(5) manual page.# This lease file was written by isc-dhcp-4.4.2
# authoring-byte-order entry is generated, DO NOT DELETEauthoring-byte-order
little-endian;group ng38b7aac835b22c30 {??dynamic;? ? ? ??supersede
server.default-lease-time = 99;? ? ? ? << Correct value}
case 3
# omshell> connectobj: <null>> new groupobj: group> set statements =
"default-lease-time=981;"obj: groupstatements = "default-lease-time=981;">
createobj: groupstatements = "default-lease-time=981;"name =
"ng38b7ab3935b23100"
?# cat /tmp/dhcpd.leases# The format of this file is documented in the
dhcpd.leases(5) manual page.# This lease file was written by isc-dhcp-4.4.2
# authoring-byte-order entry is generated, DO NOT DELETEauthoring-byte-order
little-endian;group ng38b7ab3935b23100 {??dynamic;? ? ? ??supersede
server.default-lease-time = 81;? ? ? << Incorrect value}
?In all the 3 cases above?just 2 least significant digits appeared in the lease
file. In /var/log/messages I found these error messages.
dhcpd: network client line 1: 100 exceeds max (255) for precision.dhcpd:
default-lease-time=100;dhcpd:? ? ? ? ? ? ? ? ? ??^?? ? ? ? ? ? ? ? ? ? ? ? ? ?
? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??dhcpd: network client line 1: 981
exceeds max (255) for precision.? ? ?dhcpd: default-lease-time=981;??dhcpd:? ?
? ? ? ? ? ? ? ??^? ??
Wondering if this is parser bug or my usage is incorrect.
Thanks,Prashanth
Bill On 3/31/2020 10:02 AM, prasanth ns wrote:
Hi dhcp-users,
I am trying to configure a host reservation through omshell. For some reason
dhcpd doesn't accept mtu and I see this error in syslog. Any idea what is going
wrong?
"dhcpd: network client line 1: 9216 exceeds max (255) for precision.
?dhcpd: option routers=1:0:1:2; option interface-mtu=9216;"
Also my lease file shows incorrect MTU of 16 instead of 9216.
# cat /tmp/dhcpd.leases
host some-host { ? dynamic; ? hardware ethernet 00:82:67:85:b1:94; ?
fixed-address 192.168.4.40; ? ? ? ? supersede routers = 01:00:01:02; ? ? ? ?
supersede interface-mtu = 16;? ? ? ? ?<<<<<< ? ? ? ? supersede
domain-name-servers = 02:01:00:05; }
# dhcpd --version isc-dhcpd-4.4.2
Here are the commands I enter at omshell:
new host
set name?= "some-host"
set hardware-address = 00:82:67:85:b1:94
set?hardware-type = 1
set ip-address = 192.168.4.40
set statements = "option routers=1:0:1:2; option interface-mtu=9216; option
domain-name-servers = 02:01:00:05; "
create
Thanks in advance, Prashanth.
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