Update rules-actions.rst

Make it clear that DelayAction() is udp-only

diff --git a/pdns/dnsdistdist/docs/rules-actions.rst b/pdns/dnsdistdist/docs/rules-actions.rst
index 3366d8da5fcad703cc7f42d78506c50c332acee2..ddcddf4984e195f111211ec206813158245383f8 100644 (file)
--- a/pdns/dnsdistdist/docs/rules-actions.rst
+++ b/pdns/dnsdistdist/docs/rules-actions.rst
@@ -32,7 +32,7 @@ For example::
 
   addAction(MaxQPSIPRule(5, 32, 48), DelayAction(100))
 
-This measures traffic per IPv4 address and per /48 of IPv6, and if traffic for such an address (range) exceeds 5 qps, it gets delayed by 100ms.
+This measures traffic per IPv4 address and per /48 of IPv6, and if traffic for such an address (range) exceeds 5 qps, it gets delayed by 100ms. (Please note: :func:`DelayAction` can only delay UDP traffic). 
 
 As another example::