# --inet
    3       TCP state=listen laddr=127.0.0.1:34567
    4       TCP state=established laddr=127.0.0.1:23456 raddr=127.0.0.1:34567
    5       TCP state=established laddr=127.0.0.1:34567 raddr=127.0.0.1:23456
    3     TCPv6 state=listen laddr=[::1]:34567
    4     TCPv6 state=established laddr=[::1]:23456 raddr=[::1]:34567
    5     TCPv6 state=established laddr=[::1]:34567 raddr=[::1]:23456
    3       UDP state=close laddr=127.0.0.1:34567
    4       UDP state=established laddr=127.0.0.1:23456 raddr=127.0.0.1:34567
    3 UDPLITEv6 state=close laddr=[::1]:34567
    4 UDPLITEv6 state=established laddr=[::1]:23456 raddr=[::1]:34567
# --inet=4
    3  TCP state=listen laddr=127.0.0.1:34567
    4  TCP state=established laddr=127.0.0.1:23456 raddr=127.0.0.1:34567
    5  TCP state=established laddr=127.0.0.1:34567 raddr=127.0.0.1:23456
    3  UDP state=close laddr=127.0.0.1:34567
    4  UDP state=established laddr=127.0.0.1:23456 raddr=127.0.0.1:34567
# --inet=6
    3     TCPv6 state=listen laddr=[::1]:34567
    4     TCPv6 state=established laddr=[::1]:23456 raddr=[::1]:34567
    5     TCPv6 state=established laddr=[::1]:34567 raddr=[::1]:23456
    3 UDPLITEv6 state=close laddr=[::1]:34567
    4 UDPLITEv6 state=established laddr=[::1]:23456 raddr=[::1]:34567
# -i
    3       TCP state=listen laddr=127.0.0.1:34567
    4       TCP state=established laddr=127.0.0.1:23456 raddr=127.0.0.1:34567
    5       TCP state=established laddr=127.0.0.1:34567 raddr=127.0.0.1:23456
    3     TCPv6 state=listen laddr=[::1]:34567
    4     TCPv6 state=established laddr=[::1]:23456 raddr=[::1]:34567
    5     TCPv6 state=established laddr=[::1]:34567 raddr=[::1]:23456
    3       UDP state=close laddr=127.0.0.1:34567
    4       UDP state=established laddr=127.0.0.1:23456 raddr=127.0.0.1:34567
    3 UDPLITEv6 state=close laddr=[::1]:34567
    4 UDPLITEv6 state=established laddr=[::1]:23456 raddr=[::1]:34567
# -i4
    3  TCP state=listen laddr=127.0.0.1:34567
    4  TCP state=established laddr=127.0.0.1:23456 raddr=127.0.0.1:34567
    5  TCP state=established laddr=127.0.0.1:34567 raddr=127.0.0.1:23456
    3  UDP state=close laddr=127.0.0.1:34567
    4  UDP state=established laddr=127.0.0.1:23456 raddr=127.0.0.1:34567
# -i6
    3     TCPv6 state=listen laddr=[::1]:34567
    4     TCPv6 state=established laddr=[::1]:23456 raddr=[::1]:34567
    5     TCPv6 state=established laddr=[::1]:34567 raddr=[::1]:23456
    3 UDPLITEv6 state=close laddr=[::1]:34567
    4 UDPLITEv6 state=established laddr=[::1]:23456 raddr=[::1]:34567