systemd waiting too long for network at Debian 8.0 Jessie's boot

The solution is fairly easy, just replace auto to allow-hotplug. So I ended up with this:

allow-hotplug lo
        iface lo inet loopback

allow-hotplug wlan0
        iface wlan0 inet static
                address 192.168.150.1
                netmask 255.255.255.0

allow-hotplug eth1
        iface eth1 inet manual
                up ifconfig $IFACE 0.0.0.0 up
                down ifconfig $IFACE down

allow-hotplug eth2
        iface eth2 inet manual
                up ifconfig $IFACE 0.0.0.0 up
                down ifconfig $IFACE down

allow-hotplug eth0
        iface eth0 inet dhcp
                post-up brctl addbr br0
                post-up brctl addif br0 eth1 eth2
                post-up ifconfig br0 192.168.10.1
                pre-down ifconfig br0 0.0.0.0
                pre-down brctl delif br0 eth1 eth2
                pre-down ifconfig br0 down
                pre-down brctl delbr br0

Now system boots really fast.