[ALERT] 134/160502 (25218) : parsing [/etc/haproxy/haproxy.cfg:57] : 'server example' : could not resolve address 'example.service.com'.
[ALERT] 134/160502 (25218) : Failed to initialize server(s) addr.

resolvers dnsmasq
  nameserver ip 10.80.10.25:5353

resolvers coredns
  nameserver ip 10.80.10.25:53

frontend example-service
    bind :80
    mode http
    default_backend example

backend example
    mode http
    balance roundrobin
    option forwardfor
    http-request set-header X-Forwarded-Port %[dst_port]
    http-request add-header X-Forwarded-Proto https if { ssl_fc }
    option httpchk HEAD / HTTP/1.1rnHost:localhost
    server example example.service.com resolvers coredns check inter 1000

dig @10.80.10.25 -p 53 example.service.com +noall +answer

; <<>> DiG 9.11.3-1ubuntu1.7-Ubuntu <<>> @10.80.10.25 -p 53 example.service.com +noall +answer
; (1 server found)
;; global options: +cmd
example.service.com.    3600    IN  A   127.0.0.1