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Diffstat (limited to 'src/network/networkd-link.c')
-rw-r--r--src/network/networkd-link.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index 7841f69dab..b1947886b7 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -1477,6 +1477,9 @@ static int link_set_ipv4_forward(Link *link) {
const char *p = NULL;
int r;
+ if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID)
+ return 0;
+
p = strjoina("/proc/sys/net/ipv4/conf/", link->ifname, "/forwarding");
r = write_string_file_no_create(p, one_zero(link_ipv4_forward_enabled(link)));
if (r < 0)
@@ -1493,6 +1496,9 @@ static int link_set_ipv6_forward(Link *link) {
if (!socket_ipv6_is_supported())
return 0;
+ if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID)
+ return 0;
+
p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/forwarding");
r = write_string_file_no_create(p, one_zero(link_ipv6_forward_enabled(link)));
if (r < 0)