Could not ping6 to nodes

[llaughing]

The issuse is that I can ping from PC to bbbb::100 and slip-radio but cannot ping from PC to nodes

Here are my configurations
RAW_ETH=0
BRIDGE=1
CREATE_BRIDGE=0
DEV_ETH=enxb827eb92ab64
DEV_BRIDGE=br0
DEV_TAP=tap0

LOG_LEVEL=3
and when i ping nodes ,it appear from bbbb::ba27:ebff:feb0:2d23 icmp_seq=1Destination unreachable Address unreachable
6lbr.log
/usr/lib/6lbr/bin/cetic_6lbr_router -c /etc/6lbr/nvm.dat -o /etc/6lbr/nvm.conf -s /dev/ttyUSB0 -R -t tap0 -B 115200 -U /usr/lib/6lbr/6lbr-ifup -D /usr/lib/6lbr/6lbr-ifdown -w /usr/lib/6lbr/www -L 3 -W /var/log/6lbr.timestamp -P 60 -C /var/log/6lbr.ip -m /usr/lib/6lbr/plugins
Contiki-develop-1.4.1 started with IPV6, RPL
Rime started with address 1.2.3.4.5.6.7.8
MAC mac_wrapper RDC br-rdc SEC llsec-wrapper NETWORK sicslowpan
2019-10-16 20:10:31.420451: NOTICE: 6LBR: Starting 6LBR version 1.4.x (Contiki-develop-1.4.1)
2019-10-16 20:10:31.420811: INFO: ETH: 6LBR watchdog started (interval: 60)
2019-10-16 20:10:31.421130: INFO: PLUGIN: Loading /usr/lib/6lbr/plugins/dummy.so
2019-10-16 20:10:31.421508: INFO: PLUGIN: Loading /usr/lib/6lbr/plugins/lwm2m.so
2019-10-16 20:10:31.421862: INFO: PLUGIN: Initialising lwm2m-client
2019-10-16 20:10:31.421980: INFO: NVM: NVM Magic : 2009
2019-10-16 20:10:31.422001: INFO: NVM: NVM Version : 5
2019-10-16 20:10:31.422020: INFO: CONFIG: Loading configuration : /etc/6lbr/nvm.conf
2019-10-16 20:10:31.422054: WARN: CONFIG: Can not open /etc/6lbr/nvm.conf : No such file or directory
2019-10-16 20:10:31.422094: NOTICE: 6LBR: Log level: 30 (services: ffffffff)
2019-10-16 20:10:31.422128: INFO: MAC: Using 'csma' mac driver
2019-10-16 20:10:31.423793: INFO: SLIP: SLIP started on /dev/ttyUSB0
2019-10-16 20:10:31.434453: INFO: SCMD: Started br-cmd process
2019-10-16 20:10:31.434542: INFO: BR-RDC: Reset SLIP Radio
2019-10-16 20:10:31.434602: INFO: BR-RDC: Fetching MAC address
2019-10-16 20:10:31.441359: ERROR: SLIP: Unknown command
2019-10-16 20:10:31.441509: INFO: BR-RDC: Got MAC: 00:12:4b:00:05:af:83:1a
2019-10-16 20:10:32.434811: INFO: ETH: TAP Ethernet interface init
2019-10-16 20:10:32.436712: INFO: TAP: opened device /dev/tap0
2019-10-16 20:10:32.437171: INFO: TAP: Running 6lbr-ifup script '/usr/lib/6lbr/6lbr-ifup'
6lbr-ifup: Attach device tap0 to bridge br0
br0: flags=4163 mtu 1500
inet6 bbbb::ba27:ebff:feb0:2d23 prefixlen 64 scopeid 0x0
inet6 fe80::ba27:ebff:feb0:2d23 prefixlen 64 scopeid 0x20
ether b8:27:eb:b0:2d:23 txqueuelen 1000 (Ethernet)
RX packets 2731 bytes 738469 (721.1 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 3189 bytes 327156 (319.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

tap0: flags=4163 mtu 1500
ether 02:0a:0b:0c:0d:0e txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

2019-10-16 20:10:32.604447: INFO: ETH: Eth MAC address : 02:00:05:af:83:1a
2019-10-16 20:10:32.604570: INFO: LLSEC: Using 'nullsec' llsec driver
2019-10-16 20:10:32.604616: INFO: 6LBR: Security layer initialized
2019-10-16 20:10:32.604786: ERROR: SLIP: Unknown command
2019-10-16 20:10:32.604864: INFO: HTTP: Starting webserver on port 80
2019-10-16 20:10:32.605109: INFO: NODECFG: Node Config init
2019-10-16 20:10:32.605162: INFO: NODECFG: No node_config.conf file specified
2019-10-16 20:10:32.605209: INFO: 6LBR: Tentative local IPv6 address fe80::212:4b00:5af:831a
2019-10-16 20:10:32.605336: INFO: 6LBR: Tentative global IPv6 address (WSN) aaaa::212:4b00:5af:831a
2019-10-16 20:10:32.605463: INFO: 6LBR: Tentative global IPv6 address (ETH) bbbb::100
2019-10-16 20:10:32.605538: INFO: 6LBR: RA Daemon enabled
2019-10-16 20:10:32.605580: INFO: 6LBR: Checking addresses duplication
2019-10-16 20:10:32.973379: ERROR: PF: Trying to send empty packet
2019-10-16 20:10:34.037244: ERROR: PF: Trying to send empty packet
2019-10-16 20:10:43.608374: INFO: 6LBR: Configured as DODAG Root aaaa::212:4b00:5af:831a
2019-10-16 20:10:43.608719: INFO: 6LBR: Starting IP64
2019-10-16 20:10:43.608829: INFO: 6LBR: IPv4 address : 172.16.0.2
2019-10-16 20:10:43.608957: INFO: 6LBR: Starting as RPL ROUTER
2019-10-16 20:10:43.609795: INFO: CONFIG: Loading configuration : /etc/6lbr/nvm.conf
2019-10-16 20:10:43.609931: WARN: CONFIG: Can not open /etc/6lbr/nvm.conf : No such file or directory
2019-10-16 20:10:43.610041: INFO: UDPS: UDP server started
CoAP push started
CoAP server started
2019-10-16 20:10:43.610232: INFO: DNS: DNS proxy started
2019-10-16 20:10:43.610338: INFO: PLUGIN: Initialising dummy
2019-10-16 20:10:43.610411: INFO: DUMMY: Dummy init
2019-10-16 20:10:43.610495: INFO: PLUGIN: Initialising lwm2m-client
2019-10-16 20:10:43.610567: INFO: LWM2M: LWM2M Client init
2019-10-16 20:10:43.610654: INFO: CONFIG: Loading configuration : /etc/6lbr/nvm.conf
2019-10-16 20:10:43.610737: WARN: CONFIG: Can not open /etc/6lbr/nvm.conf : No such file or directory
2019-10-16 20:10:43.610814: INFO: 6LBR: CETIC 6LBR Started
RD client started
2019-10-16 20:11:07.497586: ERROR: BR-RDC: br-rdc: send failed, slip ack timeout (9)
2019-10-16 20:11:07.525692: ERROR: BR-RDC: br-rdc: ack received for unknown packet (9)
2019-10-16 20:29:33.399844: FATAL: SLIP: read() : No such file or directory
2019-10-16 20:29:33.400551: INFO: TAP: Running 6lbr-ifdown script '/usr/lib/6lbr/6lbr-ifdown'
6lbr-ifdown: Remove interface tap0
2019-10-16 20:29:33.502189: INFO: BR-RDC: Set MAC: 00:00:00:00:00:00:00:00
2019-10-16 20:29:33.502635: FATAL: SLIP: slip_flushbuf::write() : Input/output error

---

2019骞� 10鏈� 16鏃� 鏄熸湡涓� 20:29:34 CST : Starting 6LBR
/usr/lib/6lbr/bin/cetic_6lbr_router -c /etc/6lbr/nvm.dat -o /etc/6lbr/nvm.conf -s /dev/ttyUSB0 -R -t tap0 -B 115200 -U /usr/lib/6lbr/6lbr-ifup -D /usr/lib/6lbr/6lbr-ifdown -w /usr/lib/6lbr/www -L 3 -W /var/log/6lbr.timestamp -P 60 -C /var/log/6lbr.ip -m /usr/lib/6lbr/plugins
Contiki-develop-1.4.1 started with IPV6, RPL
Rime started with address 1.2.3.4.5.6.7.8
MAC mac_wrapper RDC br-rdc SEC llsec-wrapper NETWORK sicslowpan
2019-10-16 20:29:34.565233: NOTICE: 6LBR: Starting 6LBR version 1.4.x (Contiki-develop-1.4.1)
2019-10-16 20:29:34.565548: INFO: ETH: 6LBR watchdog started (interval: 60)
2019-10-16 20:29:34.565886: INFO: PLUGIN: Loading /usr/lib/6lbr/plugins/dummy.so
2019-10-16 20:29:34.566232: INFO: PLUGIN: Loading /usr/lib/6lbr/plugins/lwm2m.so
2019-10-16 20:29:34.566536: INFO: PLUGIN: Initialising lwm2m-client
2019-10-16 20:29:34.566649: INFO: NVM: NVM Magic : 2009
2019-10-16 20:29:34.566670: INFO: NVM: NVM Version : 5
2019-10-16 20:29:34.566688: INFO: CONFIG: Loading configuration : /etc/6lbr/nvm.conf
2019-10-16 20:29:34.566721: WARN: CONFIG: Can not open /etc/6lbr/nvm.conf : No such file or directory
2019-10-16 20:29:34.566757: NOTICE: 6LBR: Log level: 30 (services: ffffffff)
2019-10-16 20:29:34.566777: INFO: MAC: Using 'csma' mac driver
2019-10-16 20:29:34.571764: INFO: SLIP: SLIP started on /dev/ttyUSB0
2019-10-16 20:29:34.582520: INFO: SCMD: Started br-cmd process
2019-10-16 20:29:34.582674: INFO: BR-RDC: Reset SLIP Radio
2019-10-16 20:29:34.582748: INFO: BR-RDC: Fetching MAC address
2019-10-16 20:29:34.587962: ERROR: SLIP: Unknown command
2019-10-16 20:29:34.588153: INFO: BR-RDC: Got MAC: 00:12:4b:00:05:af:83:1a
2019-10-16 20:29:34.935467: FATAL: SLIP: read() : No such file or directory