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-rw-r--r--net/xfrm/xfrm_state.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 85f3f43a6cca..dfacb9c2a6e3 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -1729,7 +1729,7 @@ int xfrm_state_mtu(struct xfrm_state *x, int mtu)
x->type && x->type->get_mtu)
res = x->type->get_mtu(x, mtu);
else
- res = mtu;
+ res = mtu - x->props.header_len;
spin_unlock_bh(&x->lock);
return res;
}