route-set class
mp-members: afi <afi-list> list of <address-prefix-range> or
afi <afi-list> <route-set-name> or
afi <afi-list> <route-set-name><range-operator>.
mp-member: rs-bar # common members
mp-member: afi ipv6 rs-foo2, 3FFE:FFFF::/35 # v6 only members...
mp-member: afi ipv4 rs-foo3, 128.9.0.0/16