Devices.DnsSourceval generic_dns_client :
?dhcp:(Ip.Dhcp_requests.t * Ip.lease Functoria.DSL.impl) ->
?group:string ->
?timeout:int64 ->
?nameservers:string list ->
?cache_size:int ->
unit ->
(Stack.stackv4v6 ->
Happy_eyeballs.happy_eyeballs ->
dns_client)
Functoria.DSL.impl