X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Flibsystemd-network%2Fsd-ipv4ll.c;h=ad8b4e3b4334974b66cd344d1a1ea5df0a00b070;hb=4644fee04fb515787bcfbba53b3cabe58c81d317;hp=689dce9adffba972f5996106dbfed22c4d0ae275;hpb=9765ce69e15fd294db9553777b621515fa57f2c6;p=elogind.git

diff --git a/src/libsystemd-network/sd-ipv4ll.c b/src/libsystemd-network/sd-ipv4ll.c
index 689dce9ad..ad8b4e3b4 100644
--- a/src/libsystemd-network/sd-ipv4ll.c
+++ b/src/libsystemd-network/sd-ipv4ll.c
@@ -375,10 +375,25 @@ int sd_ipv4ll_set_index(sd_ipv4ll *ll, int interface_index) {
 }
 
 int sd_ipv4ll_set_mac(sd_ipv4ll *ll, const struct ether_addr *addr) {
+        bool need_restart = false;
+
         assert_return(ll, -EINVAL);
-        assert_return(ll->state == IPV4LL_STATE_INIT, -EBUSY);
+        assert_return(addr, -EINVAL);
+
+        if (memcmp(&ll->mac_addr, addr, ETH_ALEN) == 0)
+                return 0;
+
+        if (ll->state != IPV4LL_STATE_INIT) {
+                log_ipv4ll(ll, "Changing MAC address on running IPv4LL "
+                           "client, restarting");
+                sd_ipv4ll_stop(ll);
+                need_restart = true;
+        }
+
+        memcpy(&ll->mac_addr, addr, ETH_ALEN);
 
-        memcpy(&ll->mac_addr.ether_addr_octet, addr, ETH_ALEN);
+        if (need_restart)
+                sd_ipv4ll_start(ll);
 
         return 0;
 }