{
    "interface": "wan|wan2",
    "service": "afraid|changeip|cloudflare|dnspark|dslreports|dyndns|easydns|googledomains|namecheap|noip|sitelutions|zoneedit|custom",
    "custom_service": "^[^\"' ]+$",
    "host_name": "^[^\"' ]+$",
    "login": "^[^\"' ]+$",
    "x_password": "^[^\"' ]+$",
    "server": "^[^\"' ]+$|^$",
    "options": ["^[^\"' ]+$"]
}