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Commits on Oct 28, 2019

  1. nixos/networkd: add ipv4-fallback and fallback as valid options t… 

    …o `LinkLocalAddressing`

Both options were introduced in systemd v243[1]. Those options can be
used to ensure that LinkLocalAddressing is only configured for a given
interface if DHCPv4 fails. To quote `systemd.network(5)`:

```
If "fallback" or "ipv4-fallback" is specified, then an IPv4
link-local address is configured only when DHCPv4 fails. If "fallback", an IPv6 link-local
address is always configured, and if "ipv4-fallback", the address is not configured. Note
that, the fallback mechanism works only when DHCPv4 client is enabled, that is, it requires
"DHCP=yes" or "DHCP=ipv4".
```

[1] systemd/systemd@8bc17bb

(cherry picked from commit 47724fc)
    @Ma27
    Ma27 committed Oct 28, 2019

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Showing with 1 addition and 1 deletion.
  1. +1 −1 nixos/modules/system/boot/networkd.nix
2 changes: 1 addition & 1 deletion nixos/modules/system/boot/networkd.nix
View file
Original file line number Diff line number Diff line change
@@ -187,7 +187,7 @@ let
# Note: For DHCP the values both, none, v4, v6 are deprecated
(assertValueOneOf "DHCP" ["yes" "no" "ipv4" "ipv6" "both" "none" "v4" "v6"])
(assertValueOneOf "DHCPServer" boolValues)
(assertValueOneOf "LinkLocalAddressing" ["yes" "no" "ipv4" "ipv6"])
(assertValueOneOf "LinkLocalAddressing" ["yes" "no" "ipv4" "ipv6" "ipv4-fallback" "fallback"])
(assertValueOneOf "IPv4LLRoute" boolValues)
(assertValueOneOf "LLMNR" ["yes" "resolve" "no"])
(assertValueOneOf "MulticastDNS" ["yes" "resolve" "no"])