LAN Bug on 6.37.3?

RouterOS Beginner Basics
1

Good day.
i have a RB941… i having so much difficulty about his router (that i believe the problem is so much basic.).
the problem is.. host that are connected via wifi do have internet connection. but host that are connected via ether 2,3 4 don’t have any internet connection even they do have IP’s from RB941.
RB941 cant ping host that are connected via ether 2,3 and 4. but RB941 can ping host that are connected via WIFI.

Host from ether 2, 3, 4 and wifi can ping RB941 (192.168.88.1)
by the way… this is just a default configuration.

actually this happens after i upgrade rbOS. from 6.25 to 6.37.3
before… with 6.25 if i reset the RB941 to default config, host from LAN and Wifi do have internet connection.

is this a bug from 6.37.3?

2

Is your WiFi interface bridged with Eth2, 3, 4 ?

3

on the default config

bridge → port
ether2
Wlan

Interface
ether3 → master port → ether2
ether4 → master port → ether2

4

post export.. difficult to say.. as this should work normal..

5

none of the settings was change after “System → Reset Configuration”
Keep user conf: uncheck
No default conf: uncheck
Backup: uncheck

this is really weird.

# dec/12/2016 00:09:21 by RouterOS 6.37.3
# software id = 84HT-B23A
#
/interface bridge
add admin-mac=D4:CA:6D:C2:9C:F2 auto-mac=no comment=defconf name=bridge
/interface ethernet
set [ find default-name=ether2 ] name=ether2-master
set [ find default-name=ether3 ] master-port=ether2-master
set [ find default-name=ether4 ] master-port=ether2-master
/ip neighbor discovery
set ether1 discover=no
set bridge comment=defconf
/interface wireless security-profiles
add authentication-types=wpa2-psk eap-methods="" group-ciphers=tkip,aes-ccm \
    management-protection=allowed mode=dynamic-keys name=wlan_password \
    supplicant-identity="" unicast-ciphers=tkip,aes-ccm wpa2-pre-shared-key=\
    f1e2d3c4b5a6
/interface wireless
set [ find default-name=wlan1 ] band=2ghz-b/g/n channel-width=20/40mhz-Ce \
    disabled=no distance=indoors frequency=auto hide-ssid=yes mode=ap-bridge \
    security-profile=wlan_password ssid=my_wifi wireless-protocol=802.11
/ip pool
add name=default-dhcp ranges=192.168.88.10-192.168.88.254
/ip dhcp-server
add address-pool=default-dhcp disabled=no interface=bridge name=defconf
/interface bridge port
add bridge=bridge comment=defconf interface=ether2-master
add bridge=bridge comment=defconf interface=wlan1
/ip address
add address=192.168.88.1/24 comment=defconf interface=bridge network=\
    192.168.88.0
/ip dhcp-client
add comment=defconf dhcp-options=hostname,clientid disabled=no interface=\
    ether1
/ip dhcp-server network
add address=192.168.88.0/24 comment=defconf gateway=192.168.88.1
/ip dns
set allow-remote-requests=yes
/ip dns static
add address=192.168.88.1 name=router
/ip firewall filter
add action=accept chain=input comment="defconf: accept ICMP" protocol=icmp
add action=accept chain=input comment="defconf: accept established,related" \
    connection-state=established,related
add action=drop chain=input comment="defconf: drop all from WAN" \
    in-interface=ether1
add action=fasttrack-connection chain=forward comment="defconf: fasttrack" \
    connection-state=established,related
add action=accept chain=forward comment="defconf: accept established,related" \
    connection-state=established,related
add action=drop chain=forward comment="defconf: drop invalid" \
    connection-state=invalid
add action=drop chain=forward comment=\
    "defconf:  drop all from WAN not DSTNATed" connection-nat-state=!dstnat \
    connection-state=new in-interface=ether1
/ip firewall nat
add action=masquerade chain=srcnat comment="defconf: masquerade" \
    out-interface=ether1
/system clock
set time-zone-name=Asia/Manila
/system routerboard settings
set cpu-frequency=650MHz protected-routerboot=disabled
/tool mac-server
set [ find default=yes ] disabled=yes
add interface=bridge
/tool mac-server mac-winbox
set [ find default=yes ] disabled=yes
add interface=bridge
6

from this export everthing seems to be OK.

Do the host on ether2-4 have DHCP-Client enabled?
What are those hosts?
Can you check IPs on these hosts?
Maybe you have another DHCP server on the same network.
Are there any other switches on those ports?
From Mikrotik point of view everything should be OK.

7

scenario 1.
ISP modem/router → DHCP ON
Mikrotik → DHCP ON (default)
WIFI host have internet connection
LAN host dont have any internet connection (static IP 192.168.88.254 or DHCP.)
LAN have internet connection (static IP: 192.168.0.254)
mikrotik cant ping host connected to LAN but can ping host connected to wifi
host IP’s came from mikrotik dhcp (192.168.88.254, 192.168.88.253 etc…)

scenario 2
ISP modem/router → DHCP off
Mikrotik → DHCP ON (default)
IP → addresses
Add ISP modem/router IP (i just copied default config IP’s of scenario 1)

WIFI host have internet connection
LAN host dont have any internet connection (static IP 192.168.88.254 or DHCP.)
LAN have internet connection (static IP: 192.168.0.254)
mikrotik cant ping host connected to LAN but can ping host connected to wifi
host IP’s came from mikrotik dhcp (192.168.88.254, 192.168.88.253 etc…)

scenario 3
ISP modem/router → DHCP Off
Mikrotik → DHCP OFF

ip > address
add isp modem/router IP
WIFI host have internet connection (if static IP, 192.168.88.253 or static IP 192.168.0.253)
LAN host dont have any internet connection (static IP 192.168.88.254 or DHCP.)
LAN have internet connection (static IP: 192.168.0.254)
mikrotik cant ping host connected to LAN but can ping host connected to wifi

this is really f***ing me up. a very basic setup that doesn’t work.
wew.

8

anyone?