Имеем:
Два 2 компьютера (PC1 и PC2), между ними 2 роутера CCR1016-12G (R1 и R2).
Подключение:

Задача: пакеты с РС1 должны добегать до РС2.
Конфиг R1:
[admin@MikroTik] > export
# jan/02/1970 00:07:42 by RouterOS 6.42.6
# software id = X0GG-ULLF
#
# model = CCR1016-12G
# serial number = xxxxxxxxxxxxxx
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ip address
add address=192.168.21.4/24 interface=ether1 network=192.168.21.0
add address=192.168.20.4/24 interface=ether4 network=192.168.20.0
/ip firewall filter
add action=accept chain=forward
add action=accept chain=input
add action=accept chain=output
/ip route
add distance=1 dst-address=192.168.30.0/24 gateway=ether1
add distance=1 dst-address=192.168.31.0/24 gateway=ether1
/system routerboard settings
set silent-boot=no
[admin@MikroTik] >
# jan/02/1970 00:07:42 by RouterOS 6.42.6
# software id = X0GG-ULLF
#
# model = CCR1016-12G
# serial number = xxxxxxxxxxxxxx
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ip address
add address=192.168.21.4/24 interface=ether1 network=192.168.21.0
add address=192.168.20.4/24 interface=ether4 network=192.168.20.0
/ip firewall filter
add action=accept chain=forward
add action=accept chain=input
add action=accept chain=output
/ip route
add distance=1 dst-address=192.168.30.0/24 gateway=ether1
add distance=1 dst-address=192.168.31.0/24 gateway=ether1
/system routerboard settings
set silent-boot=no
[admin@MikroTik] >
[admin@MikroTik] > export
# jan/02/1970 00:31:12 by RouterOS 6.42.6
# software id = VDZF-PWQS
#
# model = CCR1016-12G
# serial number = xxxxxxxxxx
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ip address
add address=192.168.31.4/24 interface=ether1 network=192.168.31.0
add address=192.168.30.4/24 interface=ether4 network=192.168.30.0
/ip firewall filter
add action=accept chain=forward
add action=accept chain=input
add action=accept chain=output
/ip route
add distance=1 dst-address=192.168.20.0/24 gateway=ether1
add distance=1 dst-address=192.168.21.0/24 gateway=ether1
/system routerboard settings
set silent-boot=no
[admin@MikroTik] >
# jan/02/1970 00:31:12 by RouterOS 6.42.6
# software id = VDZF-PWQS
#
# model = CCR1016-12G
# serial number = xxxxxxxxxx
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ip address
add address=192.168.31.4/24 interface=ether1 network=192.168.31.0
add address=192.168.30.4/24 interface=ether4 network=192.168.30.0
/ip firewall filter
add action=accept chain=forward
add action=accept chain=input
add action=accept chain=output
/ip route
add distance=1 dst-address=192.168.20.0/24 gateway=ether1
add distance=1 dst-address=192.168.21.0/24 gateway=ether1
/system routerboard settings
set silent-boot=no
[admin@MikroTik] >
Делаем пинг с R2 на R1:
[admin@MikroTik] > ping address=192.168.21.4 src-address=192.168.31.4 count=3
SEQ HOST SIZE TTL TIME STATUS
0 192.168.21.4 56 64 0ms
1 192.168.21.4 56 64 0ms
2 192.168.21.4 56 64 0ms
sent=3 received=3 packet-loss=0% min-rtt=0ms avg-rtt=0ms max-rtt=0ms
[admin@MikroTik] > ping address=192.168.20.4 src-address=192.168.31.4 count=3
SEQ HOST SIZE TTL TIME STATUS
0 192.168.20.4 timeout
1 192.168.20.4 timeout
2 192.168.20.4 timeout
sent=3 received=0 packet-loss=100%
SEQ HOST SIZE TTL TIME STATUS
0 192.168.21.4 56 64 0ms
1 192.168.21.4 56 64 0ms
2 192.168.21.4 56 64 0ms
sent=3 received=3 packet-loss=0% min-rtt=0ms avg-rtt=0ms max-rtt=0ms
[admin@MikroTik] > ping address=192.168.20.4 src-address=192.168.31.4 count=3
SEQ HOST SIZE TTL TIME STATUS
0 192.168.20.4 timeout
1 192.168.20.4 timeout
2 192.168.20.4 timeout
sent=3 received=0 packet-loss=100%
Маскарадинг не нужен, нужно именно "провести" пакет от РС до РС.
Подскажите, где я олень, как правильно настроить маршрутизацию между сетями.