Set udp dontfrag by default

option/outbound.go

@@ -108,12 +108,12 @@ type DialerOptions struct {
 	Detour         string         `json:"detour,omitempty"`
 	BindInterface  string         `json:"bind_interface,omitempty"`
 	BindAddress    *ListenAddress `json:"bind_address,omitempty"`
-	BindAddress6   *ListenAddress `json:"bind_address6,omitempty"`
 	ProtectPath    string         `json:"protect_path,omitempty"`
 	RoutingMark    int            `json:"routing_mark,omitempty"`
 	ReuseAddr      bool           `json:"reuse_addr,omitempty"`
 	ConnectTimeout Duration       `json:"connect_timeout,omitempty"`
 	TCPFastOpen    bool           `json:"tcp_fast_open,omitempty"`
+	UDPFragment    bool           `json:"udp_fragment,omitempty"`
 	DomainStrategy DomainStrategy `json:"domain_strategy,omitempty"`
 	FallbackDelay  Duration       `json:"fallback_delay,omitempty"`
 }