Whether to enable special handling of the IPv4 default route. If enabled, the IPv4 default route from wireguard.peer-routes will be placed to a dedicated routing-table and two policy routing rules will be added. The fwmark number is also used as routing-table for the default-route, and if fwmark is zero, an unused fwmark/table is chosen automatically. This corresponds to what wg-quick does with Table=auto and what WireGuard calls "Improved Rule-based Routing".
Note that for this automatism to work, you usually don't want to set ipv4.gateway, because that will result in a conflicting default route.
Leaving this at the default will enable this option automatically if ipv4.never-default is not set and there are any peers that use a default-route as allowed-ips.
Like ip4-auto-default-route, but for the IPv6 default route.
The listen-port. If listen-port is not specified, the port will be chosen randomly when the interface comes up.
If non-zero, only transmit packets of the specified size or smaller, breaking larger packets up into multiple fragments.
If zero a default MTU is used. Note that contrary to wg-quick's MTU setting, this does not take into account the current routes at the time of activation.
Whether to automatically add routes for the AllowedIPs ranges of the peers. If %TRUE (the default), NetworkManager will automatically add routes in the routing tables according to ipv4.route-table and ipv6.route-table. Usually you want this automatism enabled. If %FALSE, no such routes are added automatically. In this case, the user may want to configure static routes in ipv4.routes and ipv6.routes, respectively.
Note that if the peer's AllowedIPs is "0.0.0.0/0" or "::/0" and the profile's ipv4.never-default or ipv6.never-default setting is enabled, the peer route for this peer won't be added automatically.
The 256 bit private-key in base64 encoding.
Flags indicating how to handle the #NMSettingWirelessSecurity:private-key property.
The use of fwmark is optional and is by default off. Setting it to 0 disables it. Otherwise, it is a 32-bit fwmark for outgoing packets.
Note that "ip4-auto-default-route" or "ip6-auto-default-route" enabled, implies to automatically choose a fwmark.