Hi
In the log I see a few devices that get their ip addresses Assigned and deassigned constantly.
I am not sure why that happens and where to look for a problem and whether it is the router itelf or there’s a problem with those devices.
The lease is set for 72 hrs.
Where would I need to look for a problem?
Thanks 
I see this kind of behavior with both wireless and wired clients.
Both loose connection and upon reconnect they do a DHCP request. Is this happening?
We are seeing the same behavior. It also impacted our ability to PXE. After configuring the following we were able to PXE again. The DHCP bouncing is still occurring.
/interface ethernet switch
set 0 l3-hw-offloading=no/interface ethernet switch l3hw-settings
set ipv6-hw=no
Without indicating the model, version of routers and show the configuration, it’s all windswept.
Sorry.
Model: CCR2116-12G-4S+
OS version: RouterOS 7.9.2
I've left out firewall rules and extra interfaces, also changed IP addresses. I can provide full config dump in PM.
/interface bridge
add admin-mac=BE:EF:BE:EF:BE:EF auto-mac=no frame-types=admit-only-vlan-tagged igmp-snooping=yes igmp-version=3 mld-version=2 name=bridge1 protocol-mode=none vlan-filtering=yes
/interface ethernet
set [ find default-name=ether1 ] comment="Connected to switch for VLAN trunking of WAN/LAN/Intra-AS" l2mtu=9570
[..]
set [ find default-name=ether13 ] l2mtu=9586
/interface vlan
add interface=bridge1 name=AS001-UPLINK vlan-id=885
add interface=bridge1 name=AS002-UPLINK vlan-id=900
add interface=bridge1 name=BGP-EVPN-INTERCONNECT vlan-id=1002
add interface=bridge1 name=OOB vlan-id=901
/interface ethernet switch
set 0 l3-hw-offloading=yes
/interface list
add name=WAN
add name=LAN
add name=Intra-AS
/interface lte apn
set [ find default=yes ] ip-type=ipv4 use-network-apn=no
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ip dhcp-server option
add code=114 name=default-url value="'some/address/here'"
/ip dhcp-server option sets
add name="onie installer" options=default-url
/ip pool
add name=DHCP-OOB ranges=172.17.0.5-172.17.0.250
/ip dhcp-server
add address-pool=DHCP-OOB interface=OOB lease-time=4w2d name=OOB
/port
set 0 name=serial0
/routing bgp template
set default as=123 disabled=no output.network=bgp-networks .redistribute=connected,static,bgp,vpn,dhcp router-id=1.2.3.4
/routing ospf instance
add disabled=yes name=default-v2
add disabled=yes name=default-v3 version=3
/routing ospf area
add disabled=yes instance=default-v2 name=backbone-v2
add disabled=yes instance=default-v3 name=backbone-v3
/snmp community
set [ find default=yes ] name=snmp
/interface bridge port
add bridge=bridge1 frame-types=admit-only-vlan-tagged interface=ether1
add bridge=bridge1 interface=ether2
/interface ethernet switch l3hw-settings
set ipv6-hw=yes
/ip firewall connection tracking
set icmp-timeout=30s tcp-close-wait-timeout=1m tcp-fin-wait-timeout=2m tcp-last-ack-timeout=30s tcp-syn-received-timeout=1m tcp-syn-sent-timeout=2m tcp-time-wait-timeout=2m udp-stream-timeout=2m udp-timeout=30s
/ip neighbor discovery-settings
set discover-interface-list=!WAN
/ip settings
set max-neighbor-entries=8192 rp-filter=loose tcp-syncookies=yes
/ipv6 settings
set max-neighbor-entries=8192
/interface bridge vlan
add bridge=bridge1 tagged=ether1,bridge1 vlan-ids=885,1002,900,901,902,903,904,905,906,907,908,909,910,911,912,913,914,915,916,917,918,919,920,921,922,923,924,925,926,927,928,999
add bridge=bridge1 tagged=ether1,bridge1 vlan-ids=929
add bridge=bridge1 tagged=ether1,bridge1 vlan-ids=930
add bridge=bridge1 tagged=ether1,bridge1 vlan-ids=931
add bridge=bridge1 tagged=ether1,bridge1 vlan-ids=932
add bridge=bridge1 tagged=ether1,bridge1 vlan-ids=933
add bridge=bridge1 tagged=ether1,bridge1 vlan-ids=934
add bridge=bridge1 tagged=ether1,bridge1 vlan-ids=935
add bridge=bridge1 tagged=ether1,bridge1 vlan-ids=936
add bridge=bridge1 tagged=ether1,bridge1 vlan-ids=937
/interface list member
add interface=ether13 list=LAN
add interface=AS001-UPLINK list=WAN
add interface=AS002-UPLINK list=WAN
add interface=BGP-EVPN-INTERCONNECT list=Intra-AS
add interface=OOB list=LAN
/interface ovpn-server server
set auth=sha1 certificate=server-certificate cipher=aes128-cbc,aes192-cbc,aes256-cbc default-profile=vpn-profile enabled=yes require-client-certificate=yes
/ip address
add address=172.17.0.1/24 interface=OOB network=172.17.0.0
/ip dhcp-server network
add address=172.17.0.0/24 boot-file-name=grub2/grubx64.efi dns-server=9.9.9.11,149.112.112.11 domain=oob.mytld.com gateway=172.17.0.1 next-server=111.111.111.111 ntp-server=123.123.123.123
/ip dns
set servers=9.9.9.11,149.112.112.11,2620:fe::11,2620:fe::fe:11
/ip firewall nat
add action=masquerade chain=srcnat ipsec-policy=out,none out-interface-list=WAN src-address=!10.0.0.0/8 src-address-list=lan_subnets to-addresses=1.2.3.4
/ip service
set telnet disabled=yes
set ftp disabled=yes
set www disabled=yes
set api disabled=yes
set winbox port=800
set api-ssl disabled=yes
/ip ssh
set always-allow-password-login=yes forwarding-enabled=both strong-crypto=yes
/ipv6 address
add address=2a00::1 interface=OOB
/ipv6 nd
set [ find default=yes ] disabled=yes
add interface=OOB
/ipv6 nd prefix default
set preferred-lifetime=infinity valid-lifetime=infinity
/routing filter rule
add chain=AS123-v4-IN disabled=no rule="if (dst == 0.0.0.0/0) { accept} else {reject}"
add chain=AS123-v4-OUT disabled=no rule="reject;"
add chain=AS123-v6-IN disabled=no rule="if (dst in ::/0) { accept} else {reject}"
add chain=AS123-v6-OUT disabled=no rule="if (dst in bgp-networks && dst-len>31 && dst-len<49) {accept} else {reject}"
/system clock
set time-zone-name=Europe/Amsterdam
/system identity
set name=oob-rtr.mytld.com
/system note
set show-at-login=no
/system routerboard settings
set auto-upgrade=yes enter-setup-on=delete-key
/tool bandwidth-server
set enabled=no
/tool mac-server
set allowed-interface-list=LAN
/tool mac-server mac-winbox
set allowed-interface-list=LAN
MIne is rb3011
and it is has to do with wired and wireless.
Some more, some less. Do not know what this is and why