X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fnetwork%2Fnetworkd-link.c;h=9b5ebeda2072c960d125c5a202d864a519b1b716;hb=eb27aeca247a4cf8816fffc4c0dbcab55ead3864;hp=d9622ac4b71df70a67f50f9fa5db801bb0c44602;hpb=c9ccc19f9eb0599109094c57b7a2f668d708f0c1;p=elogind.git

diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index d9622ac4b..9b5ebeda2 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -443,6 +443,12 @@ static void dhcp_handler(sd_dhcp_client *client, int event, void *userdata) {
 
         if (event == DHCP_EVENT_IP_CHANGE || event == DHCP_EVENT_EXPIRED ||
             event == DHCP_EVENT_STOP) {
+                if (link->network->dhcp_critical) {
+                        log_warning_link(link, "DHCPv4 connection considered system critical, "
+                                         "ignoring request to reconfigure it down.");
+                        return;
+                }
+
                 if (link->dhcp_address) {
                         address_drop(link->dhcp_address, link, address_drop_handler);