<html>
    <head>
      <base href="https://bugs.freedesktop.org/" />
    </head>
    <body>
      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - systemd-networkd assertion failure with Xen vif"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=79789#c6">Comment # 6</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - systemd-networkd assertion failure with Xen vif"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=79789">bug 79789</a>
              from <span class="vcard"><a class="email" href="mailto:steven@uplinklabs.net" title="Steven Noonan <steven@uplinklabs.net>"> <span class="fn">Steven Noonan</span></a>
</span></b>
        <pre>I wonder if this is the issue?

diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c          
index 6677b94..88c224d 100644                                                   
--- a/src/network/networkd-link.c                                               
+++ b/src/network/networkd-link.c                                               
@@ -761,7 +761,7 @@ static int link_set_mtu(Link *link, uint32_t mtu) {         
                 return r;                                                      
         }                                                                      

-        link_unref(link);
+        link_ref(link);

         return 0;
 }</pre>
        </div>
      </p>
      <hr>
      <span>You are receiving this mail because:</span>
      
      <ul>
          <li>You are the QA Contact for the bug.</li>
      </ul>
    </body>
</html>