| Server IP : 35.80.110.71 / Your IP : 216.73.216.221 Web Server : Apache/2.4.58 (Ubuntu) System : Linux ip-172-31-21-44 6.17.0-1019-aws #19~24.04.1-Ubuntu SMP Tue Jun 23 18:53:06 UTC 2026 x86_64 User : ubuntu ( 1000) PHP Version : 8.3.31 Disable Function : NONE MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : OFF Directory : /usr/share/doc/calibre/ |
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# Frequently asked questions ## How to use IPv6 for Calibre's content server? * https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1021175 > The embedded only listens on 0.0.0.0, aka AF_INET, aka IPv4. This makes > the content server quite unusable in the current internet, where IPv4 > connectivity gets sparingly, either by CG-NAT used by the provider or by > IPv6-only environments. You can change listening address from preferences window. Change listening address from "Preferences"->"Sharing"->"Sharing over the net"->"Advanced"->"The interface on which to listen for connections:". The default value is "0.0.0.0", but you can change to "::" for IPv6. And use "127.0.0.1" or "::1" to limit access from localhost. Here is document text for this option: > The default is to listen on all available IPv4 interfaces. You can > change this to, for example, "127.0.0.1" to only listen for connections > from the local machine, or to "::" to listen to all incoming IPv6 and > IPv4 connections.