In reading this thread, I believe there may be a communication issue. I am going to guess that @Jedrzej when in his 1st post wrote Trunk port, he did not mean Tagged port! I think he mean Trunk to me the link (any link) between 2 devices - that is a switch to switch port, not a switch/device/SRX to client port.
@Jedrzej the syntax Trunk in Junos equates to a Tagged port - that is a connection that carries multiple VLAN at L2, not specifically routed
I could well be wrong, but reading between the lines maybe this is the case??
Good luck.