I recently got a Rock5b and a Radxa A8 wireless module and after a fresh install of B39 build Debian xfce, it shows up with two plan interfaces. Why does that happen?
rock@rock-5b:~$ sudo lshw -C network
*-network
description: Wireless interface
product: Realtek Semiconductor Co., Ltd.
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0002:21:00.0
logical name: wlan0
version: 00
serial: a8:41:f4:26:19:de
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8852be driverversion=v1.15.10.0.5-0-gfa2af07cf.20220 firmware=N/A latency=0 link=no multicast=yes wireless=unassociated
resources: irq:207 ioport:1000(size=256) memory:f2200000-f22fffff
*-network
description: Ethernet interface
product: RTL8125 2.5GbE Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0004:41:00.0
logical name: enP4p65s0
version: 05
serial: 00:e0:4c:03:2a:f6
size: 1Gbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8125 driverversion=9.011.00-NAPI-RSS duplex=full ip=192.168.1.32 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
resources: irq:163 ioport:200000(size=256) memory:f4200000-f420ffff memory:f4210000-f4213fff
*-network:0
description: Wireless interface
physical id: 9
bus info: pci@0002:21:00.0
logical name: wlan1
serial: aa:41:f4:26:19:de
capabilities: ethernet physical wireless
configuration: broadcast=yes driver=rtl8852be driverversion=v1.15.10.0.5-0-gfa2af07cf.20220 firmware=N/A link=no multicast=yes wireless=unassociated
*-network:1
description: Ethernet interface
physical id: a
logical name: docker0
serial: 02:42:73:49:9d:70
capabilities: ethernet physical
configuration: autonegotiation=off broadcast=yes driver=bridge driverversion=2.3 firmware=N/A ip=172.17.0.1 link=no multicast=yes
rock@rock-5b:~$ nmcli
enP4p65s0: connected to Wired connection 1
“Realtek RTL8125 2.5GbE”
ethernet (r8125), 00:E0:4C:03:2A:F6, hw, mtu 1500
enP4p65s0: connected to Wired connection 1
“Realtek RTL8125 2.5GbE”
ethernet (r8125), 00:E0:4C:03:2A:F6, hw, mtu 1500
ip4 default
inet4 192.168.1.32/24
route4 0.0.0.0/0
route4 192.168.1.0/24
inet6 fd20:d1de:9ede:3d4e:c75a:b4d9:a099:16ad/64
inet6 fe80::110a:4eef:e002:dadb/64
route6 fdfc:980a:2568::/64
route6 fd37:1e3c:a3a7::/64
route6 fd20:d1de:9ede:3d4e::/64
route6 fe80::/64
docker0: connected (externally) to docker0
“docker0”
bridge, 02:42:73:49:9D:70, sw, mtu 1500
inet4 172.17.0.1/16
route4 172.17.0.0/16
wlan0: disconnected
“Realtek Wi-Fi”
wifi (rtl8852be), A8:41:F4:26:19:DE, hw, mtu 1500
wlan1: disconnected
“Realtek Wi-Fi”
1 connection available
wifi (rtl8852be), AA:41:F4:26:19:DE, hw, mtu 1500
p2p-dev-wlan0: disconnected
“p2p-dev-wlan0”
wifi-p2p, hw
p2p-dev-wlan1: disconnected
“p2p-dev-wlan1”
wifi-p2p, hw
lo: unmanaged
“lo”
loopback (unknown), 00:00:00:00:00:00, sw, mtu 65536
DNS configuration:
servers: 192.168.1.1
domains: localdomain
interface: enP4p65s0
However, if I use wlan0 to connect to a wifi network, nmcli shows
wlan1: disconnected
“Realtek Wi-Fi”
1 connection available
wifi (rtl8852be), AA:41:F4:26:19:DE, hw, mtu 1500