Index: if.c
===================================================================
RCS file: /cvs/src/sys/net/if.c,v
retrieving revision 1.589
diff -u -p -r1.589 if.c
--- if.c	6 Nov 2019 03:51:26 -0000	1.589
+++ if.c	7 Nov 2019 03:10:36 -0000
@@ -2198,6 +2198,7 @@ ifioctl(struct socket *so, u_long cmd, c
 	case SIOCDELMULTI:
 	case SIOCSIFMEDIA:
 	case SIOCSVNETID:
+	case SIOCDVNETID:
 	case SIOCSVNETFLOWID:
 	case SIOCSTXHPRIO:
 	case SIOCSRXHPRIO: