diff -up openssh-8.6p1/sshkey.c.fips openssh-8.6p1/sshkey.c

--- openssh-8.6p1/sshkey.c.fips	2021-05-06 12:08:36.493926838 +0200

+++ openssh-8.6p1/sshkey.c	2021-05-06 12:08:36.502926908 +0200

@@ -1705,6 +1707,8 @@ rsa_generate_private_key(u_int bits, RSA

		goto out;

	if (EVP_PKEY_keygen(ctx, &res) <= 0) {

+		if (FIPS_mode())

+			logit_f("the key length might be unsupported by FIPS mode approved key generation method");

 		ret = SSH_ERR_LIBCRYPTO_ERROR;

 		goto out;

 	}