[PATCH v1] doc/mlx5: update IPv6 routing extension matching limitation

[Rongwei Liu]

Due to hardware limitations, the relaxed mode is not supported,
otherwise, packets may mismatch.

Signed-off-by: Rongwei Liu <rongweil at nvidia.com>
Acked-by: Suanming Mou <suanmingm at nvidia.com>
Acked-by: Thomas Monjalon <thomas at monjalon.net>
---
 doc/guides/nics/mlx5.rst | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst
index 45379960f0..857c2493bb 100644
--- a/doc/guides/nics/mlx5.rst
+++ b/doc/guides/nics/mlx5.rst
@@ -244,6 +244,8 @@ Limitations
 
   - Matching on ICMP6 following IPv6 routing extension header,
     should match ``ipv6_routing_ext_next_hdr`` instead of ICMP6.
+    IPv6 routing extension matching is not supported in flow template relaxed
+    matching mode (see ``struct rte_flow_pattern_template_attr::relaxed_matching``).
 
 - When using Verbs flow engine (``dv_flow_en`` = 0), flow pattern without any
   specific VLAN will match for VLAN packets as well:
-- 
2.27.0