On 06/07/2016 02:23 PM, Hannes Frederic Sowa wrote:
On Tue, Jun 7, 2016, at 21:48, Philip Prindeville wrote:
static struct rtnl_link_ops ipgre_link_ops __read_mostly = {
diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
index d8f5e0a..95649eb 100644
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -682,7 +682,7 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct
net_device *dev,
}
df = tnl_params->frag_off;
- if (skb->protocol == htons(ETH_P_IP))
+ if (skb->protocol == htons(ETH_P_IP) && !tunnel->ignore_df)
df |= (inner_iph->frag_off&htons(IP_DF));
max_headroom = LL_RESERVED_SPACE(rt->dst.dev) + sizeof(struct iphdr)
Is still enforce that we inherit the ttl from the inner header to the
outer header if we don't set df bit?
Thanks,
Hannes
That's correct. That happens a few lines above and we don't change that
behavior with this patch.
-Philip
