cangw and multiple vcan

[pompushko]

Hello.

I have a strange issue with cangw and 2 virtual CANs.

cat /etc/network/interfaces.d/vcan0

auto vcan0
iface vcan0 inet manual
        pre-up /sbin/ip link add dev $IFACE type vcan
        pre-up /sbin/ip link set dev $IFACE mtu 16
        up /sbin/ifconfig $IFACE up mtu 16
        down /sbin/ifconfig $IFACE down
        post-up /usr/bin/cangw -A -s vcan0 -d can0 -e -f 98DA00F1:DFFF00FF
        post-up /usr/bin/cangw -A -s can0 -d vcan0 -e -f 98DAF100:DFFFFF00

cat /etc/network/interfaces.d/vcan1

auto vcan1
iface vcan1 inet manual
        pre-up /sbin/ip link add dev $IFACE type vcan
        pre-up /sbin/ip link set dev $IFACE mtu 16
        up /sbin/ifconfig $IFACE up mtu 16
        down /sbin/ifconfig $IFACE down
        post-up /usr/bin/cangw -A -s vcan1 -d can1 -e -f 98DA00F1:DFFF00FF
        post-up /usr/bin/cangw -A -s can1 -d vcan1 -e -f 98DAF100:DFFFFF00

My cangw rules works strange:

cangw -A -s can1 -d vcan1 -e -f 98DAF100:DFFFFF00 # 0 handled 0 dropped 0 deleted
cangw -A -s vcan1 -d can1 -e -f 98DA00F1:DFFF00FF # 12 handled 0 dropped 0 deleted           <=
cangw -A -s can0 -d vcan0 -e -f 98DAF100:DFFFFF00 # 18 handled 0 dropped 0 deleted           <=
cangw -A -s vcan0 -d can0 -e -f 98DA00F1:DFFF00FF # 0 handled 0 dropped 0 deleted

Some of mine packets go to second virtual interface, but should go to first one.
Very strange...

Or my rules are bad?

[hartkopp]

Nothing looks wrong here.
You get traffic from can0 that is routed to vcan0 and you get traffic from vcan1 that is routed to can1.
There is no connection between *can0 and *can1 - or is there some userspace application for this?

[pompushko]

Yep.... no connection. Even different speed :D

[hartkopp]

So what is your problem then?
There are different filters too.