This is a note to let you know that I've just added the patch titled net: ipv6: Do not keep IPv6 addresses when IPv6 is disabled to the 4.7-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: net-ipv6-do-not-keep-ipv6-addresses-when-ipv6-is-disabled.patch and it can be found in the queue-4.7 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Wed Sep 21 10:05:18 CEST 2016 From: Mike Manning <mmanning@xxxxxxxxxxx> Date: Fri, 12 Aug 2016 12:02:38 +0100 Subject: net: ipv6: Do not keep IPv6 addresses when IPv6 is disabled From: Mike Manning <mmanning@xxxxxxxxxxx> [ Upstream commit bc561632dddd5af0c4444d919f01cbf6d553aa0a ] If IPv6 is disabled when the option is set to keep IPv6 addresses on link down, userspace is unaware of this as there is no such indication via netlink. The solution is to remove the IPv6 addresses in this case, which results in netlink messages indicating removal of addresses in the usual manner. This fix also makes the behavior consistent with the case of having IPv6 disabled first, which stops IPv6 addresses from being added. Fixes: f1705ec197e7 ("net: ipv6: Make address flushing on ifdown optional") Signed-off-by: Mike Manning <mmanning@xxxxxxxxxxx> Acked-by: David Ahern <dsa@xxxxxxxxxxxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/ipv6/addrconf.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -3469,7 +3469,7 @@ static int addrconf_ifdown(struct net_de /* combine the user config with event to determine if permanent * addresses are to be removed from address hash table */ - keep_addr = !(how || _keep_addr <= 0); + keep_addr = !(how || _keep_addr <= 0 || idev->cnf.disable_ipv6); /* Step 2: clear hash table */ for (i = 0; i < IN6_ADDR_HSIZE; i++) { @@ -3525,7 +3525,7 @@ restart: /* re-combine the user config with event to determine if permanent * addresses are to be removed from the interface list */ - keep_addr = (!how && _keep_addr > 0); + keep_addr = (!how && _keep_addr > 0 && !idev->cnf.disable_ipv6); INIT_LIST_HEAD(&del_list); list_for_each_entry_safe(ifa, tmp, &idev->addr_list, if_list) { Patches currently in stable-queue which might be from mmanning@xxxxxxxxxxx are queue-4.7/net-ipv6-do-not-keep-ipv6-addresses-when-ipv6-is-disabled.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html