From 592bf3fb4355cf3fae9cefc4dbb3fc0de75c12da Mon Sep 17 00:00:00 2001
From: Tom Wilkie <tom.wilkie@gmail.com>
Date: Thu, 25 Feb 2016 15:39:20 +0000
Subject: [PATCH] Use TCP for weave dns.

---
 probe/appclient/resolver.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/probe/appclient/resolver.go b/probe/appclient/resolver.go
index d9d7f07c02..265428384b 100644
--- a/probe/appclient/resolver.go
+++ b/probe/appclient/resolver.go
@@ -57,10 +57,13 @@ func NewResolver(targets []string, lookup LookupIP, setters ...setter) Resolver
 
 // LookupUsing produces a LookupIP function for the given DNS server.
 func LookupUsing(dnsServer string) func(host string) (ips []net.IP, err error) {
+	client := dns.Client{
+		Net: "tcp",
+	}
 	return func(host string) (ips []net.IP, err error) {
 		m := &dns.Msg{}
 		m.SetQuestion(dns.Fqdn(host), dns.TypeA)
-		in, err := dns.Exchange(m, dnsServer)
+		in, _, err := client.Exchange(m, dnsServer)
 		if err != nil {
 			return nil, err
 		}