From 91d6c9b93ebcb931a083177d62a1274a3ee5b9ac Mon Sep 17 00:00:00 2001
From: Matt Macy <mmacy@FreeBSD.org>
Date: Wed, 30 May 2018 21:46:10 +0000
Subject: [PATCH] if_setlladdr: don't call ioctl in epoch context

PR: 228612
Reported by: markj
---
 sys/net/if.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/net/if.c b/sys/net/if.c
index 37ed26092c0c..6d85a0f1165d 100644
--- a/sys/net/if.c
+++ b/sys/net/if.c
@@ -3839,6 +3839,7 @@ if_setlladdr(struct ifnet *ifp, const u_char *lladdr, int len)
 	 * to re-init it in order to reprogram its
 	 * address filter.
 	 */
+	NET_EPOCH_EXIT();
 	if ((ifp->if_flags & IFF_UP) != 0) {
 		if (ifp->if_ioctl) {
 			ifp->if_flags &= ~IFF_UP;
@@ -3852,6 +3853,7 @@ if_setlladdr(struct ifnet *ifp, const u_char *lladdr, int len)
 		}
 	}
 	EVENTHANDLER_INVOKE(iflladdr_event, ifp);
+	return (0);
  out:
 	NET_EPOCH_EXIT();
 	return (rc);