From ffaa6be8a4d84f3c5595328a44f3df2a8cf92e7f Mon Sep 17 00:00:00 2001
From: Brad Fitzpatrick <bradfitz@tailscale.com>
Date: Sat, 8 Jul 2023 19:33:23 -0700
Subject: [PATCH] tailcfg: add json omitempty to DNSConfig.ExitNodeFilteredSet

We were storing a lot of "ExitNodeFilteredSet":null in the database.

Updates tailscale/corp#1818 (found in the process)

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
---
 tailcfg/tailcfg.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tailcfg/tailcfg.go b/tailcfg/tailcfg.go
index f99512557..89a8953c9 100644
--- a/tailcfg/tailcfg.go
+++ b/tailcfg/tailcfg.go
@@ -1282,7 +1282,7 @@ type DNSConfig struct {
 	// match.
 	//
 	// Matches are case insensitive.
-	ExitNodeFilteredSet []string
+	ExitNodeFilteredSet []string `json:",omitempty"`
 }
 
 // DNSRecord is an extra DNS record to add to MagicDNS.