Document -U flag to ldns-signzone

Thank you Andreas for noticing!

diff --git a/examples/ldns-signzone.1 b/examples/ldns-signzone.1
index ff1a9e3e5604e7b9092c3c27d686ec68a96e9cc7..68f9f77376a235cdd93fa8c70f2bcd8df2c25bc3 100644 (file)
--- a/examples/ldns-signzone.1
+++ b/examples/ldns-signzone.1
@@ -91,6 +91,12 @@ small, and only the SEP keys that are passed are used.  If there are no
 SEP keys, the DNSKEY RRset is signed with the non\-SEP keys.  This option
 turns off the default and all keys are used to sign the DNSKEY RRset.
 
+.TP
+\fB-U\fR
+Sign with every unique algorithm in the provided keys.  The DNSKEY set
+is signed with all the SEP keys, plus all the non\-SEP keys that have an
+algorithm that was not presen in the SEP key set.
+
 .TP
 \fB-E\fR \fIname\fR
 Use the EVP cryptographic engine with the given name for signing. This