--- files/sshd.rc6.4	2015-07-14 01:46:54.740323877 +0200
+++ files/sshd.rc6.4-r1	2015-07-14 01:52:15.888712999 +0200
@@ -31,6 +31,11 @@
 			ewarn "where FOO is the interface(s) providing the following address(es):"
 			ewarn "${warn_addr}"
 		fi
+
+		# "ssh-keygen -A" needs writable root fs (bug #554804)
+		if ! ls /etc/ssh/ssh_host_*_key 1>/dev/null 2>/dev/null ; then
+			need root
+		fi
 	fi
 }