TLDR: I’m having trouble getting both 2.4G and 5G to work on my simple setup.
I use HEX E50UG and CAP ac RBcAPGi-5acD2nD.
I plugged the CAP to my eth5 and did the very basic Capsman config.
# 2025-06-04 17:36:00 by RouterOS 7.18.2
# software id = T5C5-70RK
#
# model = E50UG
# serial number = HHG0A6Q41ZH
/caps-man datapath
add bridge=bridge name=datapath1
/caps-man security
add authentication-types=wpa-psk,wpa2-psk encryption="" name=mt_security
/caps-man configuration
add channel.band=2ghz-g/n .skip-dfs-channels=yes country=lithuania datapath=datapath1 installation=indoor mode=ap name=Config_2.4G security=mt_security ssid=MT2
add channel.band=5ghz-a/n/ac .skip-dfs-channels=yes country=lithuania datapath=datapath1 installation=indoor mode=ap name=Config_5G security=mt_security ssid=MT5
/caps-man access-list
add disabled=yes
/caps-man manager
set enabled=yes
/caps-man provisioning
add action=create-dynamic-enabled hw-supported-modes=ac master-configuration=Config_5G name-format=prefix-identity name-prefix=5G
add action=create-dynamic-enabled hw-supported-modes=gn master-configuration=Config_2.4G name-format=prefix-identity name-prefix=2.4G
When I only provision my Config_5G everything works fine. But when I start to provison and the other Config_2.4G my wireless network start falpping and basically crashes.
Please advise with the looped packet or fix for this.
2025-06-04 17:32:27 interface,warning ether5: bridge RX looped packet - MAC 74:4d:28:7d:d8:f1 -> f4:1e:57:9b:ba:51 ETHERTYPE 0x88bc
2025-06-04 17:32:32 interface,warning ether5: bridge RX looped packet - MAC 74:4d:28:7d:d8:f1 -> f4:1e:57:9b:ba:51 ETHERTYPE 0x88bc
2025-06-04 17:33:10 caps,info [74:4D:28:7D:D8:F1/12/ac3d,Join,[74:4D:28:7D:D8:EF]] joined, provides radio(s): 74:4D:28:7D:D8:F2,74:4D:28:7D:D8:F1
2025-06-04 17:33:14 caps,info 5G-CAP2-1: selected channel 5180/20-Ceee/ac/P(23dBm)
2025-06-04 17:33:16 caps,info 2.4G-CAP2-1: selected channel 2452/20-Ce/gn(20dBm)
2025-06-04 17:33:19 interface,info 2.4G-CAP2-1 detect LAN
2025-06-04 17:33:21 interface,warning ether5: bridge RX looped packet - MAC 74:4d:28:7d:d8:f1 -> f4:1e:57:9b:ba:51 ETHERTYPE 0x88bc
2025-06-04 17:33:28 dhcp,warning defconf offering lease 192.168.88.20 for BA:79:82:D9:87:B3 without success
2025-06-04 17:34:06 caps,info [74:4D:28:7D:D8:F1/12/5490,Join,[74:4D:28:7D:D8:EF]] joined, provides radio(s): 74:4D:28:7D:D8:F2,74:4D:28:7D:D8:F1
2025-06-04 17:34:10 caps,info 5G-CAP2-1: selected channel 5180/20-Ceee/ac/P(23dBm)
2025-06-04 17:34:12 caps,info 2.4G-CAP2-1: selected channel 2452/20-Ce/gn(20dBm)
2025-06-04 17:34:20 interface,info 2.4G-CAP2-1 detect LAN
2025-06-04 17:34:21 interface,warning ether5: bridge RX looped packet - MAC 74:4d:28:7d:d8:f1 -> f4:1e:57:9b:ba:51 ETHERTYPE 0x88bc
2025-06-04 17:34:24 dhcp,warning defconf offering lease 192.168.88.20 for BA:79:82:D9:87:B3 without success
2025-06-04 17:35:04 caps,info [74:4D:28:7D:D8:F1/12/791b,Join,[74:4D:28:7D:D8:EF]] joined, provides radio(s): 74:4D:28:7D:D8:F2,74:4D:28:7D:D8:F1