Trying to use cannelloni as "socketcancl" (socketcan client), while on other side there is socketcand?

[ZoranStojsavljevic]

I discovered that socketcand on the embedded side does NOT recognize cannelloni on my VM, which has pass-through mechanisms between VM on PC and embedded HW (Beaglebone Black).

What I do, I set in my VM my private network, which sees all the components (energenie switch, bbb board and VM eth2 interface with built-in DHCP and TFTPD-hpa which work perfectly).

On the VM, I have the following set:

lsmod | grep can
vcan 16384 0
can_gw 20480 0
can_dev 24576 0
can_bcm 24576 0
can_raw 20480 2
can 49152 3 can_raw,can_bcm,can_gw
ifconfig vcan0
vcan0: flags=193<UP,RUNNING,NOARP> mtu 72
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 1 (UNSPEC)
RX packets 54555 bytes 861125 (840.9 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 54555 bytes 861125 (840.9 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

True CAN-Fd vcan0 interface.

The VM private IP eth2 looks like:
eth2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.15.2 netmask 255.255.255.0 broadcast 192.168.15.255
inet6 fe80::210:60ff:fe31:5757 prefixlen 64 scopeid 0x20
ether 00:10:60:31:57:57 txqueuelen 1000 (Ethernet)
RX packets 51066 bytes 3185024 (3.0 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 103432 bytes 65516832 (62.4 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

NMAP command gives me the following:
nmap -T5 -sP 192.168.15.0/24

Starting Nmap 7.40 ( https://nmap.org ) at 2018-08-14 12:59 GMT
Nmap scan report for 192.168.15.21
Host is up (0.0037s latency).
MAC Address: 88:B6:27:01:66:EA (Gembird Europe BV)
Nmap scan report for 192.168.15.53
Host is up (0.010s latency).
MAC Address: 88:F0:77:5A:14:1C (Cisco Systems)
Nmap scan report for 192.168.15.101
Host is up (0.0023s latency).
MAC Address: F0:45:DA:83:09:B4 (Unknown)
Nmap scan report for 192.168.15.2
Host is up.
Nmap done: 256 IP addresses (4 hosts up) scanned in 1.70 seconds

So, my BBB IP is 192.168.15.101 !

The VM Cannelonni is configured as:
cannelloni -I vcan0 -R 192.168.15.101 -r 28601 -l 28601&

On the BBB side, I have very similar VCAN interfaces, and similar VCAN0 CAN-Fd capable interface.

But I am not able to connect with the command:
socketcand -v -i vcan0 -p 28601 -l eth0&

My best guess is that beacon is working, but I do NOT see any receiving CAN-Fd packets which Cannelloni sends to 192.168.15.101 , port 28601.

And here is the CLI transcript what I did on the BBB side:

root@beaglebone:~ ps -aux | grep socketcand
root 1607 0.0 0.2 10196 1324 pts/0 Sl 12:07 0:00 socketcand -v -i vcan0 -p 28601 -l eth0
root 1656 0.0 0.2 2776 1208 pts/0 S+ 13:05 0:00 grep socketcand
root@beaglebone:~ nc 192.168.15.101 28601
client connected
< hi > < open vcan0 >
connecting BCM socket...
< ok > < rawmode >
state changed to 2
< ok >

And I do NOT see any received packets. neither any beacon discovery.

I have here two questions about this problem:
[1] Does socketcand recognize cannelloni CAN packets? If not, why, and how to rework socketcand, so it could be achievable?
[2] Does any another socketcancl (socketcan client) exist which is compatible with socketcand?

Please, help!

Thank you,
Zoran Stojsavljevic