Update cheatsheets

linux/nmcli-connection

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# nmcli connection
+
+> Manage connections with NetworkManager.
+> This subcommand can also be called with `nmcli c`.
+> More information: <https://networkmanager.dev/docs/api/latest/nmcli.html>.
+
+- List all NetworkManager connections (shows name, UUID, type and device):
+
+`nmcli connection`
+
+- Activate a connection:
+
+`nmcli connection up uuid {{uuid}}`
+
+- Deactivate a connection:
+
+`nmcli connection down uuid {{uuid}}`
+
+- Create an auto-configured dual stack connection:
+
+`nmcli connection add ifname {{interface_name}} type {{ethernet}} ipv4.method {{auto}} ipv6.method {{auto}}`
+
+- Create a static IPv6-only connection:
+
+`nmcli connection add ifname {{interface_name}} type {{ethernet}} ip6 {{2001:db8::2/64}} gw6 {{2001:db8::1}} ipv6.dns {{2001:db8::1}} ipv4.method {{ignore}}`
+
+- Create a static IPv4-only connection:
+
+`nmcli connection add ifname {{interface_name}} type {{ethernet}} ip4 {{10.0.0.7/8}} gw4 {{10.0.0.1}} ipv4.dns {{10.0.0.1}} ipv6.method {{ignore}}`
+
+- Create a VPN connection using OpenVPN from an OVPN file:
+
+`nmcli connection import type {{openvpn}} file {{path/to/vpn_config.ovpn}}`