From 84414544ded470cd270680c0900ea9dfb95b88da Mon Sep 17 00:00:00 2001
From: Roopa Prabhu <roopa@cumulusnetworks.com>
Date: Sun, 15 May 2016 13:49:05 -0700
Subject: [PATCH] ifupdownaddons: iproute2: fix set_mtu api to return if
 --no-act (DRYRUN) is set

Ticket: CM-10965
Reviewed By: julien
Testing Done: Tested set mtu with dry run

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
---
 ifupdownaddons/iproute2.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ifupdownaddons/iproute2.py b/ifupdownaddons/iproute2.py
index cf15046..04c6900 100644
--- a/ifupdownaddons/iproute2.py
+++ b/ifupdownaddons/iproute2.py
@@ -419,8 +419,9 @@ class iproute2(utilsBase):
         self._cache_update([ifacename, 'hwaddress'], hwaddress)
 
     def link_set_mtu(self, ifacename, mtu):
+        if ifupdownflags.flags.DRYRUN:
+            return True
         if not mtu or not ifacename: return
-
         with open('/sys/class/net/%s/mtu' % ifacename, 'w') as f:
             f.write(mtu)
         self._cache_update([ifacename, 'mtu'], mtu)