Go version
all versions since go1.18
Output of go env in your module/workspace:
see above
What did you do?
Call net.Dialer.DialContext to create a connected *net.UDPConn. Call WriteMsgUDPAddrPort on it with a zero value destination address.
What did you see happen?
WriteMsgUDPAddrPort fails with non-IPv6 address.
What did you expect to see?
WriteMsgUDPAddrPort should allow zero value addresses, just like how WriteMsgUDP allows nil addresses.
WriteMsgUDPAddrPort is used here instead of Write, because we need to send socket control messages together with the payload for UDP GSO.
This should be a straightforward fix. I'm sending a CL.
Comment From: mrkfrmn
CC @neild from owners.
Comment From: gopherbot
Change https://go.dev/cl/692436 mentions this issue: internal/poll: permit nil destination address in WriteMsg{Inet4,Inet6}
Comment From: gopherbot
Change https://go.dev/cl/692435 mentions this issue: syscall: permit nil destination address in sendmsgN{Inet4,Inet6}
Comment From: gopherbot
Change https://go.dev/cl/692437 mentions this issue: net: allow zero value destination address in WriteMsgUDPAddrPort