在GO中获取数据报的目标地址

Question

In C it's possible to setsockopt IP_PKTINFO. Is there any way to get the destination address of the underlying IP packet in GO?

_, addr, err := d.conn.ReadFromUDP(buf)

Answer 1

I implemented this in a DNS library in Go a couple of years ago.
You can see the discussion in the pull request here.

There was another PR making this public a year ago, so I guess you can just import that module from your code.