1 files changed, 3 insertions, 2 deletions

diff --git a/vendor/golang.org/x/net/ipv4/helper.go b/vendor/golang.org/x/net/ipv4/helper.go
index a4457d6..b494a2c 100644
--- a/vendor/golang.org/x/net/ipv4/helper.go
+++ b/vendor/golang.org/x/net/ipv4/helper.go
@@ -24,14 +24,15 @@ var (
         errNoSuchMulticastInterface = errors.New("no such multicast interface")
         errNotImplemented           = errors.New("not implemented on " + runtime.GOOS + "/" + runtime.GOARCH)
 
-        // See http://www.freebsd.org/doc/en/books/porters-handbook/freebsd-versions.html.
+        // See https://www.freebsd.org/doc/en/books/porters-handbook/versions.html.
         freebsdVersion  uint32
         compatFreeBSD32 bool // 386 emulation on amd64
 )
 
 // See golang.org/issue/30899.
 func adjustFreeBSD32(m *socket.Message) {
-        if freebsdVersion >= 1103000 {
+        // FreeBSD 12.0-RELEASE is affected by https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236737
+        if 1200086 <= freebsdVersion && freebsdVersion < 1201000 {
                 l := (m.NN + 4 - 1) &^ (4 - 1)
                 if m.NN < l && l <= len(m.OOB) {
                         m.NN = l