network configuration is outdated

[dmig]

F.e.

[Match]
Name = wg0

[Network]
Description=WireGuard tunnel wg0
IPMasquerade=both
Address = 10.1.0.1/24
Address = fd9f:8ab0:9ee5::1/120

[Route]
Gateway = 10.1.0.1
Destination = 10.1.0.0/24
GatewayOnlink = true

• Complains on IPMasquerade option:

  [InvalidValue] IPMasquerade=both
  [SettingRequires] IPMasquerade requires IPForward=ipv4

  IPForward is deprecated since version 256 (https://github.com/systemd/systemd/blob/main/NEWS#L345-L355) and extension is unaware of IPv6Forwarding/IPv4Forwarding. Also, [SettingRequires] is wrong: "IPv4Forwarding ... Defaults to true if IPMasquerade= is enabled for IPv4..."

• [InvalidValue] IPMasquerade=both error is awkward -- this is the value extension suggested me.

• [InvalidValue] Address=fd9f:8ab0:9ee5::1/120 -- it doesn't like this address

• [InvalidSetting] GatewayOnlink is not supported in section Route -- wrong (https://www.freedesktop.org/software/systemd/man/latest/systemd.network.html#GatewayOnLink=)

[hangxingliu]

The support for version 256 will be added in next release

[dmig]

Great to know. Still, take a look at the last 2 points.