diff --git a/dns.go b/dns.go
index 3287dbb..6bb9258 100644
--- a/dns.go
+++ b/dns.go
@@ -154,13 +154,13 @@ var dns_servers = []*DNSServer{
 	// jlu5
 
 	&DNSServer{"recursive", "jlu5", "l.recursive-servers.dn42", 4,
-		"172.22.108.22", 0},
+		"172.22.108.22:53", 0},
 	&DNSServer{"recursive", "jlu5", "l.recursive-servers.dn42", 6,
 		"[fd86:bad:11b7:53::2]:53", 0},
 
 	&DNSServer{"jlu5", "jlu5", "sea", 6, "[fd86:bad:11b7:1::5353]:53", 0},
 	&DNSServer{"jlu5", "jlu5", "sjc2", 6, "[fd86:bad:11b7:22::5353]:53", 0},
-	&DNSServer{"jlu5", "jlu5", "dal", 6, "[fd86:bad:11b7:33::5353:53", 0},
+	&DNSServer{"jlu5", "jlu5", "dal", 6, "[fd86:bad:11b7:33::5353]:53", 0},
 	&DNSServer{"jlu5", "jlu5", "ymq", 6, "[fd86:bad:11b7:23::5353]:53", 0},
 	&DNSServer{"jlu5", "jlu5", "ams", 6, "[fd86:bad:11b7:118::5353]:53", 0},
 	&DNSServer{"jlu5", "jlu5", "fra", 6, "[fd86:bad:11b7:117::5353]:53", 0},
@@ -169,7 +169,7 @@ var dns_servers = []*DNSServer{
 	// lantian
 
 	&DNSServer{"recursive", "lantian", "t.recursive-servers.dn42", 4,
-		"172.22.76.110", 0},
+		"172.22.76.110:53", 0},
 	&DNSServer{"recursive", "lantian", "t.recursive-servers.dn42", 6,
 		"[fdbc:f9dc:67ad:2547::53]:53", 0},