From b1b0b42e48303134731e017a108c6c334ef5f4c8 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Tue, 17 Sep 2019 21:29:23 +0900
Subject: [PATCH] network: add missing link->network checks

When the function is called, no network file may be assigned to the
link.
---
 src/network/networkd-link.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index f1aeb7287e34..46d55f64dc5b 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -2393,9 +2393,9 @@ static int link_drop_foreign_config(Link *link) {
                         continue;
 
                 if (link_address_is_dynamic(link, address)) {
-                        if (FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_DHCP))
+                        if (link->network && FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_DHCP))
                                 continue;
-                } else if (FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_STATIC))
+                } else if (link->network && FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_STATIC))
                         continue;
 
                 if (link_is_static_address_configured(link, address)) {
@@ -2435,11 +2435,11 @@ static int link_drop_foreign_config(Link *link) {
                     in_addr_equal(AF_INET6, &route->dst, &(union in_addr_union) { .in6 = {{{ 0xff,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0 }}} }))
                         continue;
 
-                if (route->protocol == RTPROT_STATIC &&
+                if (route->protocol == RTPROT_STATIC && link->network &&
                     FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_STATIC))
                         continue;
 
-                if (route->protocol == RTPROT_DHCP &&
+                if (route->protocol == RTPROT_DHCP && link->network &&
                     FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_DHCP))
                         continue;
 
