Improves comment

Author: maddeleine

tests/integrationv2/common.py

@@ -348,8 +348,9 @@ class Curves(object):
     """
     X25519 = Curve("X25519", Protocols.TLS13)
     P256 = Curve("P-256")
-    # providers who negotiate SSLv3 may not not send the supported
-    # groups extension so P-384 and P-521 cannot be negotiated
+    # Our only SSLv3 provider doesn't support extensions
+    # so there is no way to negotiate a curve other than the 
+    # default P-256 in SSLv3.
     P384 = Curve("P-384", Protocols.TLS10)
     P521 = Curve("P-521", Protocols.TLS10)
     SecP256r1Kyber768Draft00 = Curve("SecP256r1Kyber768Draft00")