Run Mikrotik RouterOS in qemu.

mikrotik/run-mikrotik-routeros-in-qemu.txt

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+### Install RouterOS:
+
+# Download RouterOS CD Image from https://mikrotik.com/download.
+  Select the X86 version.
+    wget https://download.mikrotik.com/routeros/X.XX.X/mikrotik-X.XX.X.iso
+
+# Create a hard disk:
+    qemu-img create -f qcow2 mikrotik.qcow2 1G
+
+# Install RouterOS:
+    qemu-system-x86_64 \
+        -name MIKRO1 \
+        -m 512 \
+        -smp cpus=1 \
+        -enable-kvm \
+        -hda mikrotik.qcow2 \
+        -cdrom mikrotik-X.XX.X.iso \
+        -serial telnet::2000,server,nowait \
+        -monitor tcp:127.0.0.1:4000,server,nowait \
+        -curses \
+        -boot d \
+        -net none \
+        -net nic,model=e1000,vlan=1,macaddr=4c:5e:0c:01:02:01 \
+        -net nic,model=e1000,vlan=2,macaddr=4c:5e:0c:01:02:02 \
+        -net nic,model=e1000,vlan=3,macaddr=4c:5e:0c:01:02:03 \
+        -net nic,model=e1000,vlan=4,macaddr=4c:5e:0c:01:02:04 \
+        -net socket,vlan=1,udp=127.0.0.1:9011,localaddr=:9001 \
+        -net socket,vlan=2,udp=127.0.0.1:9012,localaddr=:9002 \
+        -net socket,vlan=3,udp=127.0.0.1:9013,localaddr=:9003 \
+        -net socket,vlan=4,udp=127.0.0.1:9014,localaddr=:9004
+
+# Install the required packages.
+
+# Once the packages are installed, the router boots and enter
+  in the installation again. To poweroff the router and exit,
+  open another terminal, enter to the qemu monitor console
+  with 'telnet 127.0.0.1 4000' and execute the 'quit' command.
+
+# Done!. RouterOS is installed in the hard disk.
+
+
+### Use RouterOS.
+
+# Power on the router:
+    qemu-system-x86_64 \
+        -name MIKRO1 \
+        -m 512 \
+        -smp cpus=1 \
+        -enable-kvm \
+        -hda mikrotik.qcow2 \
+        -serial telnet::2000,server,nowait \
+        -monitor tcp:127.0.0.1:4000,server,nowait \
+        -display none \
+        -daemonize \
+        -net none \
+        -net nic,model=e1000,vlan=1,macaddr=4c:5e:0c:01:02:01 \
+        -net nic,model=e1000,vlan=2,macaddr=4c:5e:0c:01:02:02 \
+        -net nic,model=e1000,vlan=3,macaddr=4c:5e:0c:01:02:03 \
+        -net nic,model=e1000,vlan=4,macaddr=4c:5e:0c:01:02:04 \
+        -net socket,vlan=1,udp=127.0.0.1:9011,localaddr=:9001 \
+        -net socket,vlan=2,udp=127.0.0.1:9012,localaddr=:9002 \
+        -net socket,vlan=3,udp=127.0.0.1:9013,localaddr=:9003 \
+        -net socket,vlan=4,udp=127.0.0.1:9014,localaddr=:9004
+
+# For TAP connection:
+    As root:
+        tunctl -u <username> -t <devname>
+        ifconfig <devname> <dirip> netmask <mask> up
+
+    qemu:
+        -net nic,model=e1000,vlan=<N>,macaddr=4c:5e:0c:01:02:0<N> \
+        -net tap,vlan=<N>,ifname=<devname>,script=no
+
+    For delete the TAP interface:
+        tunctl -d <devname>
+
+# For bridge connection to real ethernet interface:
+    As root:
+        ip link add <brname> type bridge
+        ip addr flush dev <ethN>  # <-- WARNING!
+        ip tuntap add dev <tapname> mode tap user <username>
+        ip link set <ethN> master <brname>
+        ip link set <tapname> master <brname>
+        ip link set dev <brname> up
+        ip link set dev <tapname> up
+        ip link set dev <ethN> up
+        ip addr add <dirip/mask> dev <brname>
+
+    qemu:
+        -net nic,model=e1000,vlan=<N>,macaddr=4c:5e:0c:01:02:0<N> \
+        -net tap,vlan=<N>,ifname=<tapname>,script=no
+
+    Delete interfaces:
+        ip link delete <brname>
+        ip link delete <tapname>
+        ip link set dev <ethN> down
+
+# Enter to the router serial console:
+    telnet 127.0.0.1 2000
+    username: admin
+    password: <blank>
+
+# To poweroff the router:
+    * Inside RouterOS: /system shutdown
+    * Outside RouterOS: telnet 127.0.0.1 4000
+                        quit
+
+# Warning: the ethernet interfaces can be out of order, check
+    the mac address and interfaces names:
+        [admin@MikroTik] > /interface ethernet print
+        Flags: X - disabled, R - running, S - slave
+         #    NAME           MTU MAC-ADDRESS       ARP
+         0 R  ether1        1500 4C:5E:0C:01:02:03 enabled
+         1 R  ether2        1500 4C:5E:0C:01:02:04 enabled
+         2 R  ether3        1500 4C:5E:0C:01:02:01 enabled
+         3 R  ether4        1500 4C:5E:0C:01:02:02 enabled