filter-set/peering-set
filter-set: mp-filter
filter-set: [mandatory] [ single] [class key]
mp-filter: afi <afi> <filter> [optional [multiple]
filter: [optional] [multiple]
peering-set: mp-peer
peering-set: [mandatory] [single] [class key]
peering: [optional] [multiple]
mp-peering: [optional] [multiple]