diff --git a/src/unix/bsd/apple/mod.rs b/src/unix/bsd/apple/mod.rs
index 485cf17f786bb11e81076eb5c3917d37e89224bf..2d70d713eaa5e2d9fcdc7985846c1f5c763905b4 100644
--- a/src/unix/bsd/apple/mod.rs
+++ b/src/unix/bsd/apple/mod.rs
@@ -2249,6 +2249,7 @@ pub const IP_PKTINFO: ::c_int = 26;
 pub const IP_RECVTOS: ::c_int = 27;
 pub const IPV6_JOIN_GROUP: ::c_int = 12;
 pub const IPV6_LEAVE_GROUP: ::c_int = 13;
+pub const IPV6_CHECKSUM: ::c_int = 26;
 pub const IPV6_RECVTCLASS: ::c_int = 35;
 pub const IPV6_TCLASS: ::c_int = 36;
 pub const IPV6_PKTINFO: ::c_int = 46;
diff --git a/src/unix/bsd/freebsdlike/mod.rs b/src/unix/bsd/freebsdlike/mod.rs
index b10f60f18b6259de39ab126482f7b0993a60074d..e2281314d456686aa4e0d1c968bc65ddcd568daa 100644
--- a/src/unix/bsd/freebsdlike/mod.rs
+++ b/src/unix/bsd/freebsdlike/mod.rs
@@ -757,6 +757,7 @@ pub const IP_DROP_MEMBERSHIP: ::c_int = 13;
 pub const IP_RECVIF: ::c_int = 20;
 pub const IPV6_JOIN_GROUP: ::c_int = 12;
 pub const IPV6_LEAVE_GROUP: ::c_int = 13;
+pub const IPV6_CHECKSUM: ::c_int = 26;
 pub const IPV6_RECVPKTINFO: ::c_int = 36;
 pub const IPV6_PKTINFO: ::c_int = 46;
 pub const IPV6_RECVTCLASS: ::c_int = 57;