-implementations MUST set the protocol version and accept the protocol
-version as SILC-1.1-<software version>. If new protocol version causes
-in compatibilities with older version the the <minor> versio number MUST
-be incremented. The <major> is incremented if new protocol version is
-fully incompatible.
+implementations MUST set the protocol version and accept at least the
+protocol version as SILC-1.1-<software version>. If new protocol version
+causes in compatibilities with older version the the <minor> versio number
+MUST be incremented. The <major> is incremented if new protocol version
+is fully incompatible.