I only send settings and logs.
It is easy to reproduce the problem because it is so behaving on all router boards.
+++++++++++ DHCP server +++++++++++++
/ip dhcp-server network> print
Flags: D - dynamic
# ADDRESS GATEWAY DNS-SERVER WINS-SERVER DOMAIN
0 192.168.0.0/24 192.168.0.1 192.168.0.1
1 192.168.30.0/24 192.168.30.1 192.168.30.1
2 192.168.90.0/24 192.168.90.1 192.168.90.1
/ip dns> print
servers: 213.191.128.8,8.8.8.8,4.2.2.2
dynamic-servers:
allow-remote-requests: yes
max-udp-packet-size: 4096
query-server-timeout: 2s
query-total-timeout: 10s
max-concurrent-queries: 100
max-concurrent-tcp-sessions: 20
cache-size: 2048KiB
cache-max-ttl: 1w
cache-used: 168KiB
+++++++++++++++++ DHCP Client ++++++++++++++++
/ip dhcp-client> print detail
Flags: X - disabled, I - invalid
0 interface=ether1 add-default-route=yes default-route-distance=0 use-peer-dns=yes use-peer-ntp=yes dhcp-options=hostname,clientid status=bound
address=192.168.0.5/24 gateway=192.168.0.1 dhcp-server=192.168.0.1 primary-dns=192.168.0.1 secondary-dns=213.191.128.8 primary-ntp=161.53.123.5
secondary-ntp=66.199.22.67 expires-after=23h51m19s
/ip dns> print
servers:
dynamic-servers: 192.168.0.1,213.191.128.8,8.8.8.8,4.2.2.2
allow-remote-requests: no
max-udp-packet-size: 4096
query-server-timeout: 2s
query-total-timeout: 10s
max-concurrent-queries: 100
max-concurrent-tcp-sessions: 20
cache-size: 2048KiB
cache-max-ttl: 1w
cache-used: 9KiB
+++++++++++++++Log Debug++++++++++++
17:04:11 dhcp,debug,state dhcp-client on ether1 entering <renewing...> state
17:04:11 dhcp,debug,packet dhcp-client on ether1 sending request with id 2667306647 to 192.168.0.1
17:04:11 dhcp,debug,packet ciaddr = 192.168.0.5
17:04:11 dhcp,debug,packet chaddr = 6C:3B:6B:00:00:01
17:04:11 dhcp,debug,packet Msg-Type = request
17:04:11 dhcp,debug,packet Parameter-List = Subnet-Mask,Classless-Route,Router,Static-Route,Domain-Server,NTP-Server,CAPWAP-Server,Vendor-Specific
17:04:11 dhcp,debug,packet Host-Name = "name"
17:04:11 dhcp,debug,packet Client-Id = 01-6C-3B-6B-00:00:01
17:04:11 dhcp,debug,packet dhcp-client on ether1 received ack with id 2667306647 from 192.168.0.1
17:04:11 dhcp,debug,packet ciaddr = 192.168.0.5
17:04:11 dhcp,debug,packet yiaddr = 192.168.0.5
17:04:11 dhcp,debug,packet siaddr = 192.168.0.1
17:04:11 dhcp,debug,packet chaddr = 6C:3B:6B:00:00:01
17:04:11 dhcp,debug,packet Msg-Type = ack
17:04:11 dhcp,debug,packet Server-Id = 192.168.0.1
17:04:11 dhcp,debug,packet Address-Time = 86400
17:04:11 dhcp,debug,packet Subnet-Mask = 255.255.255.0
17:04:11 dhcp,debug,packet Router = 192.168.0.1
17:04:11 dhcp,debug,packet Domain-Server = 192.168.0.1,213.191.128.8,8.8.8.8,4.2.2.2
17:04:11 dhcp,debug,packet NTP-Server = 161.53.123.5,66.199.22.67
17:04:11 dhcp,debug,state dhcp-client on ether1 entering <bound> state
17:08:34 dhcp,debug,state dhcp-client on ether1 entering <renewing...> state
17:08:34 dhcp,debug,packet dhcp-client on ether1 sending request with id 2667306647 to 192.168.0.1
17:08:34 dhcp,debug,packet ciaddr = 192.168.0.5
17:08:34 dhcp,debug,packet chaddr = 6C:3B:6B:00:00:01
17:08:34 dhcp,debug,packet Msg-Type = request
17:08:34 dhcp,debug,packet Parameter-List = Subnet-Mask,Classless-Route,Router,Static-Route,Domain-Server,NTP-Server,CAPWAP-Server,Vendor-Specific
17:08:34 dhcp,debug,packet Host-Name = "name"
17:08:34 dhcp,debug,packet Client-Id = 01-6C-3B-6B-00-00-01
17:08:34 dhcp,debug,packet dhcp-client on ether1 received ack with id 2667306647 from 192.168.0.1
17:08:34 dhcp,debug,packet ciaddr = 192.168.0.5
17:08:34 dhcp,debug,packet yiaddr = 192.168.0.5
17:08:34 dhcp,debug,packet siaddr = 192.168.0.1
17:08:34 dhcp,debug,packet chaddr = 6C:3B:6B:00:00:01
17:08:34 dhcp,debug,packet Msg-Type = ack
17:08:34 dhcp,debug,packet Server-Id = 192.168.0.1
17:08:34 dhcp,debug,packet Address-Time = 86400
17:08:34 dhcp,debug,packet Subnet-Mask = 255.255.255.0
17:08:34 dhcp,debug,packet Router = 192.168.0.1
17:08:34 dhcp,debug,packet Domain-Server = 192.168.0.1,213.191.128.8,8.8.8.8,4.2.2.2
17:08:34 dhcp,debug,packet NTP-Server = 161.53.123.5,66.199.22.67
17:08:34 dhcp,debug,state dhcp-client on ether1 entering <bound> state