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I am trying to get CAN1 on BBB Wireless to work as described here, following all steps in the sequence. I am able to bring the interface up, however at the first transaction, the syslog shows can1: bus-off. Here's my syslog, reflecting operations sudo ifconfig can1 up and then cansend can1 5A1#00.01.02.03.04:

Jun 27 20:40:40 beaglebone kernel: [ 5032.463839] c_can_platform 481d0000.can can1: setting BTR=1c0b BRPE=0000
Jun 27 20:40:40 beaglebone kernel: [ 5032.472130] IPv6: ADDRCONF(NETDEV_UP): can1: link is not ready
Jun 27 20:40:40 beaglebone kernel: [ 5032.472216] IPv6: ADDRCONF(NETDEV_CHANGE): can1: link becomes ready
Jun 27 20:40:40 beaglebone connmand[948]: can1 {newlink} index 3 operstate 2 <DOWN>
Jun 27 20:40:40 beaglebone connmand[948]: can1 {newlink} index 3 address 00:00:00:00:00:00 mtu 16
Jun 27 20:40:40 beaglebone connmand[948]: can1 {newlink} index 3 operstate 6 <UP>
Jun 27 20:41:37 beaglebone kernel: [ 5089.970808] c_can_platform 481d0000.can can1: bus-off
Jun 27 20:41:37 beaglebone connmand[948]: can1 {newlink} index 3 address 00:00:00:00:00:00 mtu 16
Jun 27 20:41:37 beaglebone connmand[948]: can1 {newlink} index 3 operstate 2 <DOWN>

Output of uname -a:
Linux beaglebone 4.19.94-ti-r64 #1buster SMP PREEMPT Fri May 21 23:57:28 UTC 2021 armv7l GNU/Linux

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