tap: Fill the IPv6 flow label field to represent flow association

This isn't optional: TCP streams must carry a unique, hard-to-guess,
non-zero label for each direction. Linux, probably among others,
will otherwise refuse to associate packets in a given stream to the
same connection.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/tap.h b/tap.h
index 385fab0..a87c121 100644
--- a/tap.h
+++ b/tap.h
@@ -1,5 +1,5 @@
 void tap_ip_send(struct ctx *c, struct in6_addr *src, uint8_t proto,
-		 char *in, size_t len);
+		 char *in, size_t len, uint32_t flow);
 int tap_send(struct ctx *c, void *data, size_t len, int vnet_pre);
 void tap_handler(struct ctx *c, uint32_t events, struct timespec *now);
 void tap_sock_init(struct ctx *c);