Merge #1490

1490: add libc::IP6T_SO_ORIGINAL_DST to socket opt r=asomers a=bearice

the original PR #1410 was stalled for a while
let's make it happen.

this should closes #1410 and #938

Co-authored-by: Icemic <bingfeng.web@gmail.com>
Co-authored-by: Bearice Ren <bearice@icybear.net>

CHANGELOG.md

@@ -24,6 +24,8 @@ This project adheres to [Semantic Versioning](https://semver.org/).
   (#[1302](https://github.com/nix-rust/nix/pull/1302))
 - Added `ptrace::interrupt` method for platforms that support `PTRACE_INTERRUPT`
   (#[1422](https://github.com/nix-rust/nix/pull/1422))
+- Added `IP6T_SO_ORIGINAL_DST` sockopt.
+  (#[1490](https://github.com/nix-rust/nix/pull/1490))
 
 ### Changed
 

src/sys/socket/sockopt.rs

@@ -283,6 +283,8 @@ sockopt_impl!(GetOnly, AcceptConn, libc::SOL_SOCKET, libc::SO_ACCEPTCONN, bool);
 sockopt_impl!(Both, BindToDevice, libc::SOL_SOCKET, libc::SO_BINDTODEVICE, OsString<[u8; libc::IFNAMSIZ]>);
 #[cfg(any(target_os = "android", target_os = "linux"))]
 sockopt_impl!(GetOnly, OriginalDst, libc::SOL_IP, libc::SO_ORIGINAL_DST, libc::sockaddr_in);
+#[cfg(any(target_os = "android", target_os = "linux"))]
+sockopt_impl!(GetOnly, Ip6tOriginalDst, libc::SOL_IPV6, libc::IP6T_SO_ORIGINAL_DST, libc::sockaddr_in6);
 sockopt_impl!(Both, ReceiveTimestamp, libc::SOL_SOCKET, libc::SO_TIMESTAMP, bool);
 #[cfg(all(target_os = "linux"))]
 sockopt_impl!(Both, ReceiveTimestampns, libc::SOL_SOCKET, libc::SO_TIMESTAMPNS, bool);