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-rw-r--r--tcp_buf.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/tcp_buf.c b/tcp_buf.c
index 2e044b2..1a39846 100644
--- a/tcp_buf.c
+++ b/tcp_buf.c
@@ -332,9 +332,13 @@ int tcp_buf_send_flag(struct ctx *c, struct tcp_tap_conn *conn, int flags)
else
dup_iov = tcp6_l2_flags_iov[tcp6_flags_used++];
- for (i = 0; i < TCP_NUM_IOVS; i++)
- memcpy(dup_iov[i].iov_base, iov[i].iov_base,
- iov[i].iov_len);
+ for (i = 0; i < TCP_NUM_IOVS; i++) {
+ /* All frames share the same ethernet header buffer */
+ if (i != TCP_IOV_ETH) {
+ memcpy(dup_iov[i].iov_base, iov[i].iov_base,
+ iov[i].iov_len);
+ }
+ }
dup_iov[TCP_IOV_PAYLOAD].iov_len = iov[TCP_IOV_PAYLOAD].iov_len;
}