[KariK]

Hi, long time Calibre user, but have not used the Content Server much. Just upgraded my Calibre to the latest: 5.40. I'm trying to start the Content Server such that it only listens to the local net. Just starting it, I get the Internet address so I assume anyone could connect. Not interested in using a password every time I access it. So I tried using the calibre-server command but am getting an error:
>calibre-server --listen-on "192.168.86.0"
Failed to bind to 192.168.86.0 with error: No socket could be created -- (('192.168.86.0', 8080): [WinError 10049] The requested address is not valid in its context). Trying to bind to the default interface: xxx.xxx.xxx.xxx instead.
But my ipconfig /all command shows the interface:
>ipconfig /all
...
Wireless LAN adapter Wi-Fi:

Connection-specific DNS Suffix . : lan
Description . . . . . . . . . . . : Dell Wireless 1705 802.11b|g|n (2.4GHZ)
Physical Address. . . . . . . . . : XX-XX-XX-XX-XX-XX
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : (deleted) (Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.86.120(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Saturday, April 2, 2022 4:05:09 PM
Lease Expires . . . . . . . . . . : Sunday, April 3, 2022 4:07:19 PM
Default Gateway . . . . . . . . . : 192.168.86.1
DHCP Server . . . . . . . . . . . : 192.168.86.1
DHCPv6 IAID . . . . . . . . . . . : (deleted)
DHCPv6 Client DUID. . . . . . . . : (deleted)
DNS Servers . . . . . . . . . . . : 192.168.86.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Is there anything else I could try?
Cheers,
Kari