From f0422dbd8b99f0a9f6fbfce2b64475095716b6da Mon Sep 17 00:00:00 2001
From: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Thu, 30 May 2019 17:33:59 +0100
Subject: [PATCH] Fix panic when determining if CKR is enabled

---
 src/tuntap/ckr.go | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/tuntap/ckr.go b/src/tuntap/ckr.go
index c996c397..c9233e64 100644
--- a/src/tuntap/ckr.go
+++ b/src/tuntap/ckr.go
@@ -115,12 +115,13 @@ func (c *cryptokey) configure() error {
 
 // Enable or disable crypto-key routing.
 func (c *cryptokey) setEnabled(enabled bool) {
-	c.enabled.Store(true)
+	c.enabled.Store(enabled)
 }
 
 // Check if crypto-key routing is enabled.
 func (c *cryptokey) isEnabled() bool {
-	return c.enabled.Load().(bool)
+	enabled, ok := c.enabled.Load().(bool)
+	return ok && enabled
 }
 
 // Check whether the given address (with the address length specified in bytes)