nspawn: fix --network-interface

Use SETLINK when modifying an existing link.

2 files changed, 1 insertions, 3 deletions

diff --git a/TODO b/TODO
index bc81a70eb1..a00c13dab2 100644
--- a/TODO
+++ b/TODO
@@ -24,8 +24,6 @@ External:
 
 Features:
 
-* nspawn --network-interface= doesn't work...
-
 * dbus: add new message hdr field for allowing interactive auth, write spec for it. update dbus spec to mandate that unknown flags *must* be ignored...
 
 * maybe introduce AssertXYZ= similar to ConditionXYZ= that causes a unit to fail (instead of skipping it) if some condition is not true...
diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
index 56d9cc68c6..5af89c9b32 100644
--- a/src/nspawn/nspawn.c
+++ b/src/nspawn/nspawn.c
@@ -1886,7 +1886,7 @@ static int move_network_interfaces(pid_t pid) {
                 if (ifi < 0)
                         return ifi;
 
-                r = sd_rtnl_message_new_link(rtnl, &m, RTM_NEWLINK, ifi);
+                r = sd_rtnl_message_new_link(rtnl, &m, RTM_SETLINK, ifi);
                 if (r < 0) {
                         log_error("Failed to allocate netlink message: %s", strerror(-r));
                         return r;