Re: [PATCH] Bluetooth: 6lowpan: Fix multi-link setup

[Michael Scott <michael@opensourcefoundries.com>]

Hi Luiz (and linux-bluetooth),

On Wed, 2017-09-20 at 12:52 +0300, Luiz Augusto von Dentz wrote:
>/From: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>/
>//
>/If there are more than one node connected and there isn't any route/
>/information attempt to check if destination address matches any of/
>/the/
>/link-local peer addresses./
>//
>/Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>/
>/---/
>/net/bluetooth/6lowpan.c | 2 +-/
>/1 file changed, 1 insertion(+), 1 deletion(-)/
>//
>/diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c/
>/index 4e2576fc0c59..55370c330386 100644/
>/--- a/net/bluetooth/6lowpan.c/
>/+++ b/net/bluetooth/6lowpan.c/
>/@@ -190,7 +190,7 @@ static inline struct lowpan_peer/
>/*peer_lookup_dst(struct lowpan_btle_dev *dev,/
>/nexthop = &lowpan_cb(skb)->gw;/
>//
>/if (ipv6_addr_any(nexthop))/
>/- return NULL;/
>/+ nexthop = daddr;/
>/} else {/
>/nexthop = rt6_nexthop(rt, daddr);/
>//

Was there any plan to bring this into the longterm 4.14 tree?  I saw 
that Jukka ACKed the patch.

Using 4.14, connecting more than 1 node via 6lowpan is completely 
broken.  This fairly simple patch restores connectivity for multiple 
6lowpan devices.

Question: Are there any hidden downsides to using this patch?

- Mike