From be26849bfb6fcee4123c687fc39bd6da1b3be328 Mon Sep 17 00:00:00 2001 From: Tom Herbert Date: Fri, 31 Jul 2015 16:52:13 -0700 Subject: [PATCH] ipv6: Disable flowlabel state ranges by default Per RFC6437 stateful flow labels (e.g. labels set by flow label manager) cannot "disturb" nodes taking part in stateless flow labels. While the ranges only reduce the flow label entropy by one bit, it is conceivable that this might bias the algorithm on some routers causing a load imbalance. For best results on the Internet we really need the full 20 bits. Signed-off-by: Tom Herbert Signed-off-by: David S. Miller --- net/ipv6/af_inet6.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index 3f0ae3a7c0b1..44bb66bde0e2 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -771,7 +771,7 @@ static int __net_init inet6_net_init(struct net *net) net->ipv6.sysctl.auto_flowlabels = IP6_DEFAULT_AUTO_FLOW_LABELS; net->ipv6.sysctl.idgen_retries = 3; net->ipv6.sysctl.idgen_delay = 1 * HZ; - net->ipv6.sysctl.flowlabel_state_ranges = 1; + net->ipv6.sysctl.flowlabel_state_ranges = 0; atomic_set(&net->ipv6.fib6_sernum, 1); err = ipv6_init_mibs(net); -- 2.20.1