From ee4931068e3e7a722327399db91ee020a74b3592 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Wed, 8 Aug 2018 21:14:20 +0900
Subject: [PATCH] network: do not re-set MTU when current and requested MTU are
 same

---
 src/network/networkd-link.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index 52b6eb3b99..9f68451dec 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -1305,6 +1305,9 @@ int link_set_mtu(Link *link, uint32_t mtu) {
         assert(link->manager);
         assert(link->manager->rtnl);
 
+        if (link->mtu == mtu)
+                return 0;
+
         log_link_debug(link, "Setting MTU: %" PRIu32, mtu);
 
         r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex);