Mirage_impl_udpSourceval direct_udp :
?random:Mirage_impl_random.random Functoria.impl ->
'a Mirage_impl_ip.ip Functoria.impl ->
'a udp Functoria.implval socket_udpv4v6 :
?group:string ->
Ipaddr.V4.t option ->
Ipaddr.V6.t option ->
udpv4v6 Functoria.implval udpv4v6_socket_conf :
ipv4_only:bool Mirage_key.key ->
ipv6_only:bool Mirage_key.key ->
Ipaddr.V4.Prefix.t Mirage_key.key ->
Ipaddr.V6.Prefix.t option Mirage_key.key ->
udpv4v6 Functoria.impl