From: Jiri Benc <jbenc@redhat.com>
Date: Mon, 5 Sep 2016 09:35:28 +0000 (+0200)
Subject: vxlan: group address requires net device
X-Git-Tag: v4.8.0~10
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e2cfe5501f99ed17e883a02c6fe81b7f9ab6f2d7;p=thirdparty%2Fiproute2.git

vxlan: group address requires net device

This is now enforced in the kernel, check also in iproute to get a better
error message.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
---

diff --git a/ip/iplink_vxlan.c b/ip/iplink_vxlan.c
index 7ba68bc14..bff583a72 100644
--- a/ip/iplink_vxlan.c
+++ b/ip/iplink_vxlan.c
@@ -266,6 +266,11 @@ static int vxlan_parse_opt(struct link_util *lu, int argc, char **argv,
 		return -1;
 	}
 
+	if ((gaddr || !IN6_IS_ADDR_UNSPECIFIED(&gaddr6)) && !link) {
+		fprintf(stderr, "vxlan: 'group' requires 'dev' to be specified\n");
+		return -1;
+	}
+
 	if (!dst_port_set && gpe) {
 		dstport = 4790;
 	} else if (!dst_port_set) {