Simplest wildcard with exception kubernetes routing from external Traefik

kubernetes-traefik.yaml

## DYNAMIC CONFIGURATION

http:
  routers:

    route-to-example-api:
      rule: "Host(`api.example.com`)"
      service: route-to-example-api
      priority: 2
      entryPoints:
        - websecure
      middlewares:
        - https-redirect        
      tls:
        certResolver: lets-encr


    route-to-example:
      rule: "HostRegexp(`example.com`,`{subhost:[a-z0-9]+}.example.com`)"
      service: route-to-kubedev
      entryPoints:
        - websecure
        - web
      priority: 1
      tls:
        certResolver: lets-encr
        domains:
          - main: "example.com"
            sans:
              - "*.example.com"
              
  services:
    route-to-example:
      loadBalancer:
        servers:
          - url: http://internal-network-address:8000
          
    route-to-example-api:
      loadBalancer:
        servers:
          - url: https://internal-network-address-to-k8s:16443