Fix panic when parsing resolv.conf

Gopkg.lock

@@ -810,9 +810,10 @@
   source = "https://github.com/containous/mesos-dns.git"
 
 [[projects]]
+  branch = "master"
   name = "github.com/miekg/dns"
   packages = ["."]
-  revision = "8060d9f51305bbe024b99679454e62f552cd0b0b"
+  revision = "906238edc6eb0ddface4a1923f6d41ef2a5ca59b"
 
 [[projects]]
   branch = "master"
@@ -1106,28 +1107,35 @@
   packages = [
     "bcrypt",
     "blowfish",
+    "ed25519",
+    "ed25519/internal/edwards25519",
     "ocsp",
     "pbkdf2",
     "scrypt"
   ]
-  revision = "4ed45ec682102c643324fae5dff8dab085b6c300"
+  revision = "b080dc9a8c480b08e698fb1219160d598526310f"
 
 [[projects]]
   name = "golang.org/x/net"
   packages = [
+    "bpf",
     "context",
     "context/ctxhttp",
     "http2",
     "http2/hpack",
     "idna",
+    "internal/iana",
+    "internal/socket",
     "internal/timeseries",
+    "ipv4",
+    "ipv6",
     "lex/httplex",
     "proxy",
     "publicsuffix",
     "trace",
     "websocket"
   ]
-  revision = "c8c74377599bd978aee1cf3b9b63a8634051cec2"
+  revision = "894f8ed5849b15b810ae41e9590a0d05395bba27"
 
 [[projects]]
   name = "golang.org/x/oauth2"
@@ -1390,6 +1398,6 @@
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "7122deb7b2056ecfa444c5fb64437c1b0723afae528a331c4b032b841039383b"
+  inputs-digest = "e39b26480b9d74df5e7c14ac916b991027976286a605a99e3c512d1fde87b21e"
   solver-name = "gps-cdcl"
   solver-version = 1