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-rw-r--r--doc/guix.texi25
1 files changed, 25 insertions, 0 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index ce82b48ad2..f0d148ace0 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -12740,6 +12740,31 @@ NetworkManager will run @code{dnsmasq} as a local caching nameserver, using a
@dfn{conditional forwarding} configuration if you are connected to a VPN, and
then update @code{resolv.conf} to point to the local nameserver.
+With this setting, you can share your network connection. For example when
+you want to share your network connection to another laptop @i{via} an
+Ethernet cable, you can open @command{nm-connection-editor} and configure the
+Wired connection's method for IPv4 and IPv6 to be ``Shared to other computers''
+and reestablish the connection (or reboot).
+
+You can also set up a @dfn{host-to-guest connection} to QEMU VMs
+(@pxref{Installing Guix in a VM}). With a host-to-guest connection, you can
+e.g.@: access a Web server running on the VM (@pxref{Web Services}) from a Web
+browser on your host system, or connect to the VM @i{via} SSH
+(@pxref{Networking Services, @code{openssh-service-type}}). To set up a
+host-to-guest connection, run this command once:
+
+@example
+nmcli connection add type tun \
+ connection.interface-name tap0 \
+ tun.mode tap tun.owner $(id -u) \
+ ipv4.method shared \
+ ipv4.addresses 172.28.112.1/24
+@end example
+
+Then each time you launch your QEMU VM (@pxref{Running Guix in a VM}), pass
+@option{-nic tap,ifname=tap0,script=no,downscript=no} to
+@command{qemu-system-...}.
+
@item none
NetworkManager will not modify @code{resolv.conf}.
@end table