should we use "network"?
root@(B1600-R66-S19)(cfg-sync Standalone)(Active)(/Common)(tmos) create sys management-route par-em-1 10.0.0.0/8 gateway 10.21.13.154
01070734:3: Configuration error: invalid management route, the dest/netmask pair ::/ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff already exists for /Common/10.0.0.0_8
root@(B1600-R66-S19)(cfg-sync Standalone)(Active)(/Common)(tmos) create sys management-route par-em-1 network 10.0.0.0/8 gateway 10.21.13.154
root@(B1600-R66-S19)(cfg-sync Standalone)(Active)(/Common)(tmos) list sys management-route
sys management-route par-em-1 {
gateway 10.21.13.154
network 10.0.0.0/8
}
sys management-route default {
gateway 172.28.66.254
network default
}