Bridge ports aren't being listed on some dhcp leases.

Hey,

I would like to know why bridge ports aren’t listed on some of my dhcp leases.

Image link: https://imgur.com/a/JY0bvAw

I have my config posted below, but I’ll talk through the setup here anyways. I have the following: LAN bridge with dhcp server on it, ip of 192.168.99.1/22. Interfaces sfp2-eth12 are on the lan bridge and sfp2 is the only enabled interface. I also have a wan bridge, on it is sfp1 with a static ip.


Config:

MikroTik RouterOS 7.8 (c) 1999-2023 https://www.mikrotik.com/

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[admin@MikroTik] > export hide-sensitive

aug/29/2023 09:57:21 by RouterOS 7.8

software id = 9Y1A-D6AI

model = CCR2116-12G-4S+

serial number = HEG08JW6YBT

/interface bridge
add disabled=yes name=Backup_Bridge
add add-dhcp-option82=yes dhcp-snooping=yes name=LAN_Bridge
add name=WAN_Bridge
/interface ethernet
set [ find default-name=ether1 ] disabled=yes
set [ find default-name=ether2 ] disabled=yes
set [ find default-name=ether3 ] disabled=yes
set [ find default-name=ether4 ] disabled=yes
set [ find default-name=ether5 ] disabled=yes
set [ find default-name=ether6 ] disabled=yes
set [ find default-name=ether7 ] disabled=yes
set [ find default-name=ether8 ] disabled=yes
/interface list
add name=LAN
add name=WAN
add name=Backup
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/port
set 0 name=serial0
/snmp community
set [ find default=yes ] disabled=yes
add addresses=::/0 name=gecko
/interface bridge port
add bridge=LAN_Bridge interface=LAN
add bridge=WAN_Bridge interface=WAN
add bridge=Backup_Bridge disabled=yes interface=Backup
/ip neighbor discovery-settings
set protocol=cdp,lldp
/ip settings
set icmp-rate-limit=1000
/ipv6 settings
set disable-ipv6=yes
/interface list member
add interface=sfp-sfpplus2 list=LAN
add interface=sfp-sfpplus3 list=LAN
add interface=sfp-sfpplus4 list=LAN
add interface=ether9 list=LAN
add interface=ether10 list=LAN
add interface=ether11 list=LAN
add interface=ether12 list=LAN
add interface=ether1 list=LAN
add interface=sfp-sfpplus1 list=WAN
add interface=ether2 list=LAN
add interface=ether3 list=LAN
add interface=ether4 list=LAN
add interface=ether5 list=LAN
add interface=ether6 list=LAN
add interface=ether7 list=LAN
add interface=ether8 list=LAN
add interface=ether13 list=Backup
/ip address
add address=64.146.174.2/26 interface=WAN_Bridge network=64.146.174.0
add address=192.168.99.1/22 interface=LAN_Bridge network=192.168.96.0
add address=192.168.96.1/22 disabled=yes interface=Backup_Bridge network=
192.168.96.0
/ip dhcp-server
add add-arp=yes address-pool=dhcp_pool12 interface=LAN_Bridge lease-time=8h30m
name=dhcp1
/ip dhcp-server network
add address=192.168.96.0/22 dns-server=8.8.8.8,8.8.4.4,66.119.192.9 gateway=
192.168.99.1 netmask=22
/ip dns
set allow-remote-requests=yes max-concurrent-queries=150
max-concurrent-tcp-sessions=50 servers=8.8.8.8,8.8.4.4,66.119.192.9
/ip firewall filter
add action=accept chain=input disabled=yes in-interface=LAN_Bridge
add action=accept chain=input comment=
“defconf: accept established,related,untracked” connection-state=
established,related,new,untracked dst-address=64.146.174.2 src-address=
66.119.222.66
add action=accept chain=input comment=“defconf: accept ICMP” dst-address=
64.146.174.2 protocol=icmp src-address=66.119.222.66
add action=drop chain=input comment=“defconf: drop invalid” connection-state=
invalid log=yes
add action=fasttrack-connection chain=forward comment=“defconf: fasttrack”
connection-state=established,related hw-offload=yes
add action=accept chain=forward comment=
“defconf: accept established,related, untracked” connection-state=
established,related,untracked
add action=drop chain=forward comment=“defconf: drop invalid” connection-state=
invalid
add action=accept chain=forward comment=“allow internet traffic” dst-address=
0.0.0.0/0 in-interface=LAN_Bridge src-address=192.168.96.0/22
add action=drop chain=forward comment=“drop all else”
add action=drop chain=input
/ip firewall nat
add action=masquerade chain=srcnat dst-address=0.0.0.0/0 out-interface=
WAN_Bridge src-address=192.168.96.0/22
/ip pool
add name=dhcp_pool12 next-pool=dhcp_pool11 ranges=192.168.99.10-192.168.99.254
add name=dhcp_pool11 next-pool=dhcp_pool12 ranges=192.168.98.10-192.168.98.254
/ip route
add disabled=no distance=1 dst-address=0.0.0.0/0 gateway=64.146.174.1 pref-src=
“” routing-table=main scope=30 suppress-hw-offload=no target-scope=10
/snmp
set contact=Shawn enabled=yes
/system clock
set time-zone-name=US/Pacific
/system routerboard settings
set enter-setup-on=delete-key
/tool sniffer
set streaming-enabled=yes streaming-server=64.146.180.19

SOLVED: After some more testing I believe these are all devices that have disconnected, but still have an active lease. I was able to ping most devices that had a bridge port listed, and 0 devices that didn’t have a bridge port listed.

Please let me know if I’m wrong.