--- /dev/null
+Index: sysconfig/network-scripts/ifup-aliases
+===================================================================
+--- sysconfig/network-scripts/ifup-aliases (revision 10197)
++++ sysconfig/network-scripts/ifup-aliases (working copy)
+@@ -55,7 +55,9 @@
+ if echo $IP_ADDR | grep -q ":"; then
+ if is_yes "${IPV6_NETWORKING}"; then
+ ip -6 addr add ${IP_ADDR} dev ${DEVICE} ${IP_ADDR_OPT}
+- ip -6 addrlabel add prefix ${IP_ADDR} dev ${DEVICE} label ${IP_ADDR_LABEL}
++ if [ -n "${IP_ADDR_LABEL}" ]; then
++ ip -6 addrlabel add prefix ${IP_ADDR} dev ${DEVICE} label ${IP_ADDR_LABEL}
++ fi
+ fi
+ elif is_yes "${IPV4_NETWORKING}"; then
+ # If broadcast is missing then autocalculate it