From a4b39022e0a8c5289ef6fdf63dfffc12d12388e1 Mon Sep 17 00:00:00 2001
From: Brad Fitzpatrick <bradfitz@tailscale.com>
Date: Thu, 14 Jan 2021 14:48:00 -0800
Subject: [PATCH] wgengine/tsdns: fix MagicDNS lookups of shared nodes

Fixes tailscale/corp#1184
---
 wgengine/tsdns/tsdns.go | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/wgengine/tsdns/tsdns.go b/wgengine/tsdns/tsdns.go
index fad334539..680bf51b3 100644
--- a/wgengine/tsdns/tsdns.go
+++ b/wgengine/tsdns/tsdns.go
@@ -201,12 +201,11 @@ func (r *Resolver) Resolve(domain string, tp dns.Type) (netaddr.IP, dns.RCode, e
 			break
 		}
 	}
-	if !anyHasSuffix {
-		return netaddr.IP{}, dns.RCodeRefused, nil
-	}
-
 	addr, found := dnsMap.nameToIP[domain]
 	if !found {
+		if !anyHasSuffix {
+			return netaddr.IP{}, dns.RCodeRefused, nil
+		}
 		return netaddr.IP{}, dns.RCodeNameError, nil
 	}