[PATCH] hv_netvsc: Set VF priv_flags to IFF_NO_ADDRCONF before open to prevent IPv6 addrconf
From: Li Tian <hidden>
Date: 2025-07-10 02:46:13
Also in:
linux-hyperv, lkml
Subsystem:
hyper-v/azure core and drivers, networking drivers, the rest · Maintainers:
"K. Y. Srinivasan", Haiyang Zhang, Wei Liu, Dexuan Cui, Long Li, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
The use of the IFF_SLAVE flag was replaced by IFF_NO_ADDRCONF to
prevent ipv6 addrconf.
Commit 8a321cf7becc6c065ae595b837b826a2a81036b9
("net: add IFF_NO_ADDRCONF and use it in bonding to prevent ipv6 addrconf")
This new flag change was not made to hv_netvsc resulting in the VF being
assinged an IPv6.
Suggested-by: Cathy Avery <redacted>
Signed-off-by: Li Tian <redacted>
---
drivers/net/hyperv/netvsc_drv.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index c41a025c66f0..a31521f00681 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c@@ -2317,8 +2317,8 @@ static int netvsc_prepare_bonding(struct net_device *vf_netdev) if (!ndev) return NOTIFY_DONE; - /* set slave flag before open to prevent IPv6 addrconf */ - vf_netdev->flags |= IFF_SLAVE; + /* Set no addrconf flag before open to prevent IPv6 addrconf */ + vf_netdev->priv_flags |= IFF_NO_ADDRCONF; return NOTIFY_DONE; }
--
2.50.0