From 55525654a8cc9c7bd899beb7f63bfdcb20b48404 Mon Sep 17 00:00:00 2001
From: Nate Brown <nbrown.us@gmail.com>
Date: Wed, 18 Dec 2019 16:49:46 -0800
Subject: [PATCH] Move tun mtu failing to an error log instead of fatal

---
 tun_linux.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tun_linux.go b/tun_linux.go
index 9ae35f7..a41a274 100644
--- a/tun_linux.go
+++ b/tun_linux.go
@@ -187,7 +187,8 @@ func (c Tun) Activate() error {
 	// Set the MTU on the device
 	ifm := ifreqMTU{Name: devName, MTU: int32(c.MaxMTU)}
 	if err = ioctl(fd, unix.SIOCSIFMTU, uintptr(unsafe.Pointer(&ifm))); err != nil {
-		return fmt.Errorf("failed to set tun mtu: %s", err)
+		// This is currently a non fatal condition because the route table must have the MTU set appropriately as well
+		l.WithError(err).Error("Failed to set tun mtu")
 	}
 
 	// Set the transmit queue length