garnet/bin/netcfg/config/default.json

{
  "dns_config": {
    "servers": ["8.8.8.8"]
  },
  "rules": [
    [ ["all", "all"], ["ip_address", "dhcp"] ]
  ],
  "filter_config": {
    "rules": [],
    "nat_rules": [],
    "rdr_rules": []
  }
}