Error slice bounds out of range. Help!

[woguwo]

Hello, I encountered a problem during use in Macos, As follows:

panic: runtime error: slice bounds out of range [:4098] with capacity 4096

goroutine 886516 [running]:
github.com/mdlayher/raw.(*packetConn).ReadFrom(0xc0061cd6e0, {0xc005833280, 0x80, 0x80})
    /github.com/mdlayher/raw/raw_bsd.go:163 +0x9e5
github.com/mdlayher/raw.(*Conn).ReadFrom(0xc00462e278, {0xc005833280, 0x80, 0x80})
    /github.com/mdlayher/raw/raw.go:47 +0x99

I searched the source code and found the problem here on raw_bsd.go:

func (p *packetConn) ReadFrom(b []byte) (int, net.Addr, error) {
 ......
 
	  // Skip past BPF header to retrieve ethernet frame
	  out := copy(b, buf[bpfl:bpfl+n])
 ......
 }

I carefully sorted out your logic. I think there's a small problem. Should it be:

  func (p *packetConn) ReadFrom(b []byte) (int, net.Addr, error) {
  .......
  
	  // Skip past BPF header to retrieve ethernet frame
	  out := copy(b, buf[bpfl:n])
  ......
  }

I don't know if the understanding is correct. Please correct it. Thank you!