Add IP_RECVDSTADDR on netbsd.
@@ -393,6 +393,8 @@ pub const F_GETNOSIGPIPE: ::c_int = 13;
pub const F_SETNOSIGPIPE: ::c_int = 14;
pub const F_MAXFD: ::c_int = 11;
+pub const IP_RECVDSTADDR: ::c_int = 7;
+pub const IP_SENDSRCADDR: ::c_int = IP_RECVDSTADDR;
pub const IP_RECVIF: ::c_int = 20;
pub const IP_PKTINFO: ::c_int = 25;
pub const IP_RECVPKTINFO: ::c_int = 26;
