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The hostname configured for the interface network script is set. The proper hostname is shown when checking nmcli for the ipv4.dhcp-hostname option, the ipv4.dhcp-send-hostname, and when viewing the generated interface configuration for send host-name option. With everything set and "dhclient eth0" as the executed command the hostname is not sent to the DHCP server. When "dhclient eth0 -H SPACE01" is executed the DHCP server finds hostname.
Anyone seen this behavior before?
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"dhclient eth0"
Aug 17 20:45:38 DHCP02 dhcpd: DHCPDISCOVER from 52:54:00:a9:62:56 via eth0
Aug 17 20:45:39 DHCP02 dhcpd: DHCPOFFER on 192.168.1.200 to 52:54:00:a9:62:56 via eth0
Aug 17 20:45:39 DHCP02 dhcpd: DHCPREQUEST for 192.168.1.200 (192.168.1.6) from 52:54:00:a9:62:56 via eth0
Aug 17 20:45:39 DHCP02 dhcpd: DHCPACK on 192.168.1.200 to 52:54:00:a9:62:56 via eth0
"dhclient eth0 -H SPACE01"
Aug 17 20:45:52 DHCP02 dhcpd: DHCPRELEASE of 192.168.1.200 from 52:54:00:a9:62:56 via eth0 (found)
Aug 17 20:46:02 DHCP02 dhcpd: DHCPDISCOVER from 52:54:00:a9:62:56 via eth0
Aug 17 20:46:02 DHCP02 dhcpd: DHCPOFFER on 192.168.1.200 to 52:54:00:a9:62:56 (SPACE01) via eth0
Aug 17 20:46:02 DHCP02 named[13511]: client 127.0.0.1#15733: updating zone 'linux.soule.ad/IN': adding an RR at 'SPACE01.linux.soule.ad' A
Aug 17 20:46:02 DHCP02 named[13511]: client 127.0.0.1#15733: updating zone 'linux.soule.ad/IN': adding an RR at 'SPACE01.linux.soule.ad' TXT
Aug 17 20:46:02 DHCP02 dhcpd: DHCPREQUEST for 192.168.1.200 (192.168.1.6) from 52:54:00:a9:62:56 (SPACE01) via eth0
Aug 17 20:46:02 DHCP02 dhcpd: DHCPACK on 192.168.1.200 to 52:54:00:a9:62:56 (SPACE01) via eth0
Aug 17 20:46:02 DHCP02 named[13511]: zone linux.soule.ad/IN: sending notifies (serial 2017081636)
Aug 17 20:46:02 DHCP02 dhcpd: Added new forward map from SPACE01.linux.soule.ad. to 192.168.1.200
Aug 17 20:46:02 DHCP02 named[13511]: client 127.0.0.1#15733: updating zone '1.168.192.in-addr.arpa/IN': deleting rrset at '200.1.168.192.in-addr.arpa' PTR
Aug 17 20:46:02 DHCP02 named[13511]: client 127.0.0.1#15733: updating zone '1.168.192.in-addr.arpa/IN': adding an RR at '200.1.168.192.in-addr.arpa' PTR
Aug 17 20:46:02 DHCP02 dhcpd: Added reverse map from 200.1.168.192.in-addr.arpa. to SPACE01.linux.soule.ad.
Aug 17 20:46:02 DHCP02 named[13511]: zone 1.168.192.in-addr.arpa/IN: sending notifies (serial 2017081631)
Aug 17 20:46:02 DHCP02 named[13511]: client 192.168.1.15#64099 (linux.soule.ad): transfer of 'linux.soule.ad/IN': IXFR started
Aug 17 20:46:02 DHCP02 named[13511]: client 192.168.1.15#64099 (linux.soule.ad): transfer of 'linux.soule.ad/IN': IXFR ended
[root@space01 ~]#
[root@space01 ~]# nmcli con show eth0 | grep dhcp
ipv4.dhcp-client-id: --
ipv4.dhcp-timeout: 0
ipv4.dhcp-send-hostname: yes
ipv4.dhcp-hostname: SPACE01
ipv4.dhcp-fqdn: --
ipv6.dhcp-send-hostname: yes
ipv6.dhcp-hostname: SPACE01
DHCP4.OPTION[9]: dhcp_server_identifier = 192.168.1.9
DHCP4.OPTION[14]: dhcp_rebinding_time = 453600
DHCP4.OPTION[16]: dhcp_message_type = 5
DHCP4.OPTION[19]: dhcp_renewal_time = 259200
DHCP4.OPTION[31]: dhcp_lease_time = 518400
[root@space01 ~]# cat /var/lib/NetworkManager/dhclient-eth0.conf
# Created by NetworkManager
send host-name "SPACE01"; # added by NetworkManager
option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;
option ms-classless-static-routes code 249 = array of unsigned integer 8;
option wpad code 252 = string;
also request rfc3442-classless-static-routes;
also request ms-classless-static-routes;
also request static-routes;
also request wpad;
also request ntp-servers;
[root@space01 ~]#
[root@space01 ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
TYPE="Ethernet"
BOOTPROTO="dhcp"
DEFROUTE="yes"
PEERDNS="yes"
PEERROUTES="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"
IPV6_FAILURE_FATAL="no"
NAME="eth0"
UUID="2b0e25e9-3404-4510-8990-6ec7d8ff1568"
DEVICE="eth0"
_ONBOOT_="yes"
DHCP_HOSTNAME="SPACE01"
[root@space01 ~]#
[root@space01 ~]# yum info NetworkManager
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirror.chpc.utah.edu
* epel: mirror.chpc.utah.edu
* extras: mirror.sesp.northwestern.edu
* jpackage-generic: mirror.ibcp.fr
* updates: centos-distro.cavecreek.net
Installed Packages
Name : NetworkManager
Arch : x86_64
Epoch : 1
Version : 1.4.0
Release : 20.el7_3
Size : 10 M
Repo : installed
From repo : updates
Summary : Network connection manager and user applications
URL : http://www.gnome.org/projects/NetworkManager/
License : GPLv2+
Description : NetworkManager is a system service that manages network interfaces and
: connections based on user or automatic configuration. It supports
: Ethernet, Bridge, Bond, VLAN, Team, InfiniBand, Wi-Fi, mobile broadband
: (WWAN), PPPoE and other devices, and supports a variety of different VPN
: services.
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