diff --git a/modules/futureware.nix b/modules/futureware.nix
index 2388c7d..5a7dba1 100644
--- a/modules/futureware.nix
+++ b/modules/futureware.nix
@@ -32,6 +32,9 @@ lib.mkMerge [
     # For fetch over SSH (repos where auth is required) or push.
     programs.ssh.knownHosts."git.home.arpa".publicKey =
       "ssh-rsa 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"; # pragma: allowlist secret
+
+    # Most LAN servers only have IPv4 DNS names.
+    systemd.network.wait-online.extraArgs = [ "--ipv4" ];
   }
 
   (lib.optionalAttrs hasGitOption {