Version compatiblity for libzmq

[LipsonX]

Environment

NetMQ Version:    3.3.0.11 -> 3.3.3.4
Operating System: win10
.NET Version:     -
libzmq(centos 7.6): 4.0.3 -> 4.3.4

Expected behaviour

for upgrade libs:
NetMQ Version:    3.3.0.11 -> 3.3.3.4
libzmq: 4.0.3 -> 4.3.4
Just zmq req-rsp and pub-sub mode

Actual behaviour

it works weirdly. likely msg is cached to send, no immediately. Does NetMQ 3.x support to libzmq 4.3.x. or 4.1.x ? and NetMQ 4.x?