diff --git a/libc-test/semver/android.txt b/libc-test/semver/android.txt
index 9fb550325d511..4ec519f06dcb9 100644
--- a/libc-test/semver/android.txt
+++ b/libc-test/semver/android.txt
@@ -764,7 +764,6 @@ IFLA_LINKMODE
 IFLA_LINKINFO
 IFLA_NET_NS_PID
 IFLA_IFALIAS
-IFLA_NUM_VF
 IFLA_VFINFO_LIST
 IFLA_STATS64
 IFLA_VF_PORTS
@@ -774,8 +773,6 @@ IFLA_GROUP
 IFLA_NET_NS_FD
 IFLA_EXT_MASK
 IFLA_PROMISCUITY
-IFLA_NUM_TX_QUEUES
-IFLA_NUM_RX_QUEUES
 IFLA_CARRIER
 IFLA_PHYS_PORT_ID
 IFLA_CARRIER_CHANGES
@@ -792,7 +789,6 @@ IFLA_NEW_NETNSID
 IFLA_IF_NETNSID
 IFLA_TARGET_NETNSID
 IFLA_CARRIER_UP_COUNT
-IFLA_CARRIER_DOWN_COUNT
 IFLA_NEW_IFINDEX
 IFLA_MIN_MTU
 IFLA_MAX_MTU
@@ -1384,7 +1380,6 @@ NFNLGRP_NONE
 NFNL_MSG_BATCH_BEGIN
 NFNL_MSG_BATCH_END
 NFNL_SUBSYS_ACCT
-NFNL_SUBSYS_COUNT
 NFNL_SUBSYS_CTHELPER
 NFNL_SUBSYS_CTNETLINK
 NFNL_SUBSYS_CTNETLINK_EXP
@@ -1662,14 +1657,12 @@ NF_IP6_PRI_CONNTRACK_DEFRAG
 NF_IP6_PRI_CONNTRACK_HELPER
 NF_IP6_PRI_FILTER
 NF_IP6_PRI_FIRST
-NF_IP6_PRI_LAST
 NF_IP6_PRI_MANGLE
 NF_IP6_PRI_NAT_DST
 NF_IP6_PRI_NAT_SRC
 NF_IP6_PRI_RAW
 NF_IP6_PRI_SECURITY
 NF_IP6_PRI_SELINUX_FIRST
-NF_IP6_PRI_SELINUX_LAST
 NF_IP_FORWARD
 NF_IP_LOCAL_IN
 NF_IP_LOCAL_OUT
@@ -1682,14 +1675,12 @@ NF_IP_PRI_CONNTRACK_DEFRAG
 NF_IP_PRI_CONNTRACK_HELPER
 NF_IP_PRI_FILTER
 NF_IP_PRI_FIRST
-NF_IP_PRI_LAST
 NF_IP_PRI_MANGLE
 NF_IP_PRI_NAT_DST
 NF_IP_PRI_NAT_SRC
 NF_IP_PRI_RAW
 NF_IP_PRI_SECURITY
 NF_IP_PRI_SELINUX_FIRST
-NF_IP_PRI_SELINUX_LAST
 NF_MAX_VERDICT
 NF_NETDEV_INGRESS
 NF_NETDEV_NUMHOOKS
diff --git a/libc-test/semver/apple.txt b/libc-test/semver/apple.txt
index da5e2c77caa74..aff954ab93e88 100644
--- a/libc-test/semver/apple.txt
+++ b/libc-test/semver/apple.txt
@@ -71,7 +71,6 @@ ATF_COM
 ATF_PERM
 ATF_PUBL
 ATF_USETRAILERS
-ATTR_BIT_MAP_COUNT
 ATTR_CMNEXT_CLONEID
 ATTR_CMNEXT_EXT_FLAGS
 ATTR_CMNEXT_LINKID
@@ -96,7 +95,6 @@ ATTR_CMN_FLAGS
 ATTR_CMN_FNDRINFO
 ATTR_CMN_FSID
 ATTR_CMN_FULLPATH
-ATTR_CMN_GEN_COUNT
 ATTR_CMN_GRPID
 ATTR_CMN_GRPUUID
 ATTR_CMN_MODTIME
@@ -1373,29 +1371,18 @@ TCP_NOOPT
 TCP_NOPUSH
 THOUSEP
 THREAD_AFFINITY_POLICY
-THREAD_AFFINITY_POLICY_COUNT
 THREAD_AFFINITY_TAG_NULL
 THREAD_BACKGROUND_POLICY
-THREAD_BACKGROUND_POLICY_COUNT
 THREAD_BACKGROUND_POLICY_DARWIN_BG
 THREAD_BASIC_INFO
-THREAD_BASIC_INFO_COUNT
 THREAD_EXTENDED_INFO
-THREAD_EXTENDED_INFO_COUNT
 THREAD_EXTENDED_POLICY
-THREAD_EXTENDED_POLICY_COUNT
 THREAD_IDENTIFIER_INFO
-THREAD_IDENTIFIER_INFO_COUNT
 THREAD_LATENCY_QOS_POLICY
-THREAD_LATENCY_QOS_POLICY_COUNT
 THREAD_PRECEDENCE_POLICY
-THREAD_PRECEDENCE_POLICY_COUNT
 THREAD_STANDARD_POLICY
-THREAD_STANDARD_POLICY_COUNT
 THREAD_THROUGHPUT_QOS_POLICY
-THREAD_THROUGHPUT_QOS_POLICY_COUNT
 THREAD_TIME_CONSTRAINT_POLICY
-THREAD_TIME_CONSTRAINT_POLICY_COUNT
 TH_FLAGS_GLOBAL_FORCED_IDLE
 TH_FLAGS_IDLE
 TH_FLAGS_SWAPPED
@@ -1549,7 +1536,6 @@ VOL_CAP_FMT_SHARED_SPACE
 VOL_CAP_FMT_SPARSE_FILES
 VOL_CAP_FMT_SYMBOLICLINKS
 VOL_CAP_FMT_VOL_GROUPS
-VOL_CAP_FMT_WRITE_GENERATION_COUNT
 VOL_CAP_FMT_ZERO_RUNS
 VOL_CAP_INT_ADVLOCK
 VOL_CAP_INT_ALLOCATE
diff --git a/libc-test/semver/dragonfly.txt b/libc-test/semver/dragonfly.txt
index 8135be3b4948d..a9b8f765e6708 100644
--- a/libc-test/semver/dragonfly.txt
+++ b/libc-test/semver/dragonfly.txt
@@ -153,7 +153,6 @@ CPUCTL_CPUID
 CPUCTL_UPDATE
 CPUCTL_MSRSBIT
 CPUCTL_MSRCBIT
-CPUCTL_CPUID_COUNT
 CRNCYSTR
 CRTSCTS
 CRTS_IFLOW
@@ -1074,7 +1073,6 @@ USER_STREAM_MAX
 USER_TZNAME_MAX
 UTIME_NOW
 UTIME_OMIT
-UTX_DB_LASTLOG
 UTX_DB_UTMPX
 UTX_DB_WTMPX
 VCHECKPT
diff --git a/libc-test/semver/freebsd.txt b/libc-test/semver/freebsd.txt
index cf9c603cf04d0..c18a3988af1db 100644
--- a/libc-test/semver/freebsd.txt
+++ b/libc-test/semver/freebsd.txt
@@ -1539,7 +1539,6 @@ USER_TZNAME_MAX
 UTIME_NOW
 UTIME_OMIT
 UTXDB_ACTIVE
-UTXDB_LASTLOGIN
 UTXDB_LOG
 VDISCARD
 VDSUSP
diff --git a/libc-test/semver/linux.txt b/libc-test/semver/linux.txt
index 9deef2a074fa5..7fefff9b3be04 100644
--- a/libc-test/semver/linux.txt
+++ b/libc-test/semver/linux.txt
@@ -989,8 +989,6 @@ IFLA_ALT_IFNAME
 IFLA_BROADCAST
 IFLA_CARRIER
 IFLA_CARRIER_CHANGES
-IFLA_CARRIER_DOWN_COUNT
-IFLA_CARRIER_UP_COUNT
 IFLA_COST
 IFLA_EVENT
 IFLA_EXT_MASK
@@ -1020,9 +1018,6 @@ IFLA_NET_NS_FD
 IFLA_NET_NS_PID
 IFLA_NEW_IFINDEX
 IFLA_NEW_NETNSID
-IFLA_NUM_RX_QUEUES
-IFLA_NUM_TX_QUEUES
-IFLA_NUM_VF
 IFLA_OPERSTATE
 IFLA_PAD
 IFLA_PARENT_DEV_BUS_NAME
@@ -1586,7 +1581,6 @@ NFNLGRP_NONE
 NFNL_MSG_BATCH_BEGIN
 NFNL_MSG_BATCH_END
 NFNL_SUBSYS_ACCT
-NFNL_SUBSYS_COUNT
 NFNL_SUBSYS_CTHELPER
 NFNL_SUBSYS_CTNETLINK
 NFNL_SUBSYS_CTNETLINK_EXP
@@ -1710,14 +1704,12 @@ NF_IP6_PRI_CONNTRACK_DEFRAG
 NF_IP6_PRI_CONNTRACK_HELPER
 NF_IP6_PRI_FILTER
 NF_IP6_PRI_FIRST
-NF_IP6_PRI_LAST
 NF_IP6_PRI_MANGLE
 NF_IP6_PRI_NAT_DST
 NF_IP6_PRI_NAT_SRC
 NF_IP6_PRI_RAW
 NF_IP6_PRI_SECURITY
 NF_IP6_PRI_SELINUX_FIRST
-NF_IP6_PRI_SELINUX_LAST
 NF_IP_FORWARD
 NF_IP_LOCAL_IN
 NF_IP_LOCAL_OUT
@@ -1730,14 +1722,12 @@ NF_IP_PRI_CONNTRACK_DEFRAG
 NF_IP_PRI_CONNTRACK_HELPER
 NF_IP_PRI_FILTER
 NF_IP_PRI_FIRST
-NF_IP_PRI_LAST
 NF_IP_PRI_MANGLE
 NF_IP_PRI_NAT_DST
 NF_IP_PRI_NAT_SRC
 NF_IP_PRI_RAW
 NF_IP_PRI_SECURITY
 NF_IP_PRI_SELINUX_FIRST
-NF_IP_PRI_SELINUX_LAST
 NF_MAX_VERDICT
 NF_QUEUE
 NF_REPEAT
@@ -2751,7 +2741,6 @@ IW_MICFAILURE_KEY_ID
 IW_MICFAILURE_GROUP
 IW_MICFAILURE_PAIRWISE
 IW_MICFAILURE_STAKEY
-IW_MICFAILURE_COUNT
 IW_ENC_CAPA_WPA
 IW_ENC_CAPA_WPA2
 IW_ENC_CAPA_CIPHER_TKIP
diff --git a/libc-test/semver/netbsd.txt b/libc-test/semver/netbsd.txt
index 353b1e7356ff5..b5167cca68314 100644
--- a/libc-test/semver/netbsd.txt
+++ b/libc-test/semver/netbsd.txt
@@ -222,7 +222,6 @@ DCCP_OPT_DATACHECKSUM
 DCCP_OPT_DATA_DISCARD
 DCCP_OPT_ELAPSEDTIME
 DCCP_OPT_INIT_COOKIE
-DCCP_OPT_NDP_COUNT
 DCCP_OPT_PADDING
 DCCP_OPT_RECV_BUF_DROPS
 DCCP_OPT_SLOW_RECV
@@ -239,7 +238,6 @@ DCCP_REASON_INV_MOVE
 DCCP_REASON_OPTION_ERR
 DCCP_REASON_UNANSW_CH
 DCCP_REASON_UNSPEC
-DCCP_SEQ_NUM_LIMIT
 DCCP_SERVICE
 DCCP_TYPE_ACK
 DCCP_TYPE_CLOSE
diff --git a/src/solid/mod.rs b/src/solid/mod.rs
index c88c663ee3f8c..673ab70d9032f 100644
--- a/src/solid/mod.rs
+++ b/src/solid/mod.rs
@@ -226,7 +226,6 @@ pub const LC_MONETARY: c_int = 3;
 pub const LC_NUMERIC: c_int = 4;
 pub const LC_TIME: c_int = 5;
 pub const LC_MESSAGES: c_int = 6;
-pub const _LC_LAST: c_int = 7;
 
 pub const EPERM: c_int = 1;
 pub const ENOENT: c_int = 2;
diff --git a/src/unix/aix/mod.rs b/src/unix/aix/mod.rs
index b4b6ecac59bd5..0a8e36fc0995b 100644
--- a/src/unix/aix/mod.rs
+++ b/src/unix/aix/mod.rs
@@ -1404,8 +1404,6 @@ pub const LPAR_INFO_FORMAT1: ::c_int = 1;
 pub const LPAR_INFO_FORMAT2: ::c_int = 2;
 pub const WPAR_INFO_FORMAT: ::c_int = 3;
 pub const PROC_MODULE_INFO: ::c_int = 4;
-pub const NUM_PROC_MODULE_TYPES: ::c_int = 5;
-pub const LPAR_INFO_VRME_NUM_POOLS: ::c_int = 6;
 pub const LPAR_INFO_VRME_POOLS: ::c_int = 7;
 pub const LPAR_INFO_VRME_LPAR: ::c_int = 8;
 pub const LPAR_INFO_VRME_RESET_HWMARKS: ::c_int = 9;
diff --git a/src/unix/bsd/apple/mod.rs b/src/unix/bsd/apple/mod.rs
index 5cad5d320e472..21a5dcc84afae 100644
--- a/src/unix/bsd/apple/mod.rs
+++ b/src/unix/bsd/apple/mod.rs
@@ -4990,7 +4990,6 @@ pub const MNT_NOWAIT: ::c_int = 2;
 
 // <mach/thread_policy.h>
 pub const THREAD_STANDARD_POLICY: ::c_int = 1;
-pub const THREAD_STANDARD_POLICY_COUNT: ::c_int = 0;
 pub const THREAD_EXTENDED_POLICY: ::c_int = 1;
 pub const THREAD_TIME_CONSTRAINT_POLICY: ::c_int = 2;
 pub const THREAD_PRECEDENCE_POLICY: ::c_int = 3;
@@ -5052,7 +5051,6 @@ pub const VM_PAGE_QUERY_PAGE_CS_NX: i32 = 0x400;
 
 // mach/task_info.h
 pub const TASK_THREAD_TIMES_INFO: u32 = 3;
-pub const HOST_CPU_LOAD_INFO_COUNT: u32 = 4;
 pub const MACH_TASK_BASIC_INFO: u32 = 20;
 
 pub const MACH_PORT_NULL: i32 = 0;
@@ -5114,7 +5112,6 @@ pub const COPYFILE_STATE_DST_BSIZE: ::c_int = 12;
 pub const COPYFILE_STATE_BSIZE: ::c_int = 13;
 
 // <sys/attr.h>
-pub const ATTR_BIT_MAP_COUNT: ::c_ushort = 5;
 pub const FSOPT_NOFOLLOW: u32 = 0x1;
 pub const FSOPT_NOFOLLOW_ANY: u32 = 0x800;
 pub const FSOPT_REPORT_FULLSIZE: u32 = 0x4;
@@ -5140,7 +5137,6 @@ pub const ATTR_CMN_OWNERID: attrgroup_t = 0x00008000;
 pub const ATTR_CMN_GRPID: attrgroup_t = 0x00010000;
 pub const ATTR_CMN_ACCESSMASK: attrgroup_t = 0x00020000;
 pub const ATTR_CMN_FLAGS: attrgroup_t = 0x00040000;
-pub const ATTR_CMN_GEN_COUNT: attrgroup_t = 0x00080000;
 pub const ATTR_CMN_DOCUMENT_ID: attrgroup_t = 0x00100000;
 pub const ATTR_CMN_USERACCESS: attrgroup_t = 0x00200000;
 pub const ATTR_CMN_EXTENDED_SECURITY: attrgroup_t = 0x00400000;
@@ -5225,7 +5221,6 @@ pub const VOL_CAP_FMT_DECMPFS_COMPRESSION: attrgroup_t = 0x00010000;
 pub const VOL_CAP_FMT_64BIT_OBJECT_IDS: attrgroup_t = 0x00020000;
 pub const VOL_CAP_FMT_DIR_HARDLINKS: attrgroup_t = 0x00040000;
 pub const VOL_CAP_FMT_DOCUMENT_ID: attrgroup_t = 0x00080000;
-pub const VOL_CAP_FMT_WRITE_GENERATION_COUNT: attrgroup_t = 0x00100000;
 pub const VOL_CAP_FMT_NO_IMMUTABLE_FILES: attrgroup_t = 0x00200000;
 pub const VOL_CAP_FMT_NO_PERMISSIONS: attrgroup_t = 0x00400000;
 pub const VOL_CAP_FMT_SHARED_SPACE: attrgroup_t = 0x00800000;
@@ -5276,45 +5271,6 @@ const fn __DARWIN_ALIGN32(p: usize) -> usize {
     p + __DARWIN_ALIGNBYTES32 & !__DARWIN_ALIGNBYTES32
 }
 
-pub const THREAD_EXTENDED_POLICY_COUNT: mach_msg_type_number_t =
-    (::mem::size_of::<thread_extended_policy_data_t>() / ::mem::size_of::<integer_t>())
-        as mach_msg_type_number_t;
-pub const THREAD_TIME_CONSTRAINT_POLICY_COUNT: mach_msg_type_number_t =
-    (::mem::size_of::<thread_time_constraint_policy_data_t>() / ::mem::size_of::<integer_t>())
-        as mach_msg_type_number_t;
-pub const THREAD_PRECEDENCE_POLICY_COUNT: mach_msg_type_number_t =
-    (::mem::size_of::<thread_precedence_policy_data_t>() / ::mem::size_of::<integer_t>())
-        as mach_msg_type_number_t;
-pub const THREAD_AFFINITY_POLICY_COUNT: mach_msg_type_number_t =
-    (::mem::size_of::<thread_affinity_policy_data_t>() / ::mem::size_of::<integer_t>())
-        as mach_msg_type_number_t;
-pub const THREAD_BACKGROUND_POLICY_COUNT: mach_msg_type_number_t =
-    (::mem::size_of::<thread_background_policy_data_t>() / ::mem::size_of::<integer_t>())
-        as mach_msg_type_number_t;
-pub const THREAD_LATENCY_QOS_POLICY_COUNT: mach_msg_type_number_t =
-    (::mem::size_of::<thread_latency_qos_policy_data_t>() / ::mem::size_of::<integer_t>())
-        as mach_msg_type_number_t;
-pub const THREAD_THROUGHPUT_QOS_POLICY_COUNT: mach_msg_type_number_t =
-    (::mem::size_of::<thread_throughput_qos_policy_data_t>() / ::mem::size_of::<integer_t>())
-        as mach_msg_type_number_t;
-pub const THREAD_BASIC_INFO_COUNT: mach_msg_type_number_t =
-    (::mem::size_of::<thread_basic_info_data_t>() / ::mem::size_of::<integer_t>())
-        as mach_msg_type_number_t;
-pub const THREAD_IDENTIFIER_INFO_COUNT: mach_msg_type_number_t =
-    (::mem::size_of::<thread_identifier_info_data_t>() / ::mem::size_of::<integer_t>())
-        as mach_msg_type_number_t;
-pub const THREAD_EXTENDED_INFO_COUNT: mach_msg_type_number_t =
-    (::mem::size_of::<thread_extended_info_data_t>() / ::mem::size_of::<integer_t>())
-        as mach_msg_type_number_t;
-
-pub const TASK_THREAD_TIMES_INFO_COUNT: u32 =
-    (::mem::size_of::<task_thread_times_info_data_t>() / ::mem::size_of::<natural_t>()) as u32;
-pub const MACH_TASK_BASIC_INFO_COUNT: u32 =
-    (::mem::size_of::<mach_task_basic_info_data_t>() / ::mem::size_of::<natural_t>()) as u32;
-pub const HOST_VM_INFO64_COUNT: mach_msg_type_number_t =
-    (::mem::size_of::<vm_statistics64_data_t>() / ::mem::size_of::<integer_t>())
-        as mach_msg_type_number_t;
-
 f! {
     pub fn CMSG_NXTHDR(mhdr: *const ::msghdr,
                        cmsg: *const ::cmsghdr) -> *mut ::cmsghdr {
diff --git a/src/unix/bsd/freebsdlike/dragonfly/mod.rs b/src/unix/bsd/freebsdlike/dragonfly/mod.rs
index 6ade7949afb0f..93a75f0fc53c8 100644
--- a/src/unix/bsd/freebsdlike/dragonfly/mod.rs
+++ b/src/unix/bsd/freebsdlike/dragonfly/mod.rs
@@ -1064,7 +1064,6 @@ pub const CPUCTL_CPUID: ::c_int = 0xc0106303;
 pub const CPUCTL_UPDATE: ::c_int = 0xc0106304;
 pub const CPUCTL_MSRSBIT: ::c_int = 0xc0106305;
 pub const CPUCTL_MSRCBIT: ::c_int = 0xc0106306;
-pub const CPUCTL_CPUID_COUNT: ::c_int = 0xc0106307;
 
 pub const CPU_SETSIZE: ::size_t = ::mem::size_of::<::cpumask_t>() * 8;
 
@@ -1436,7 +1435,6 @@ pub const DOWNTIME: ::c_short = 11;
 // utmpx database types
 pub const UTX_DB_UTMPX: ::c_uint = 0;
 pub const UTX_DB_WTMPX: ::c_uint = 1;
-pub const UTX_DB_LASTLOG: ::c_uint = 2;
 pub const _UTX_LINESIZE: usize = 32;
 pub const _UTX_USERSIZE: usize = 32;
 pub const _UTX_IDSIZE: usize = 4;
diff --git a/src/unix/bsd/freebsdlike/freebsd/mod.rs b/src/unix/bsd/freebsdlike/freebsd/mod.rs
index 7b90d743c2144..80663bbf6c149 100644
--- a/src/unix/bsd/freebsdlike/freebsd/mod.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/mod.rs
@@ -3680,7 +3680,6 @@ pub const DEAD_PROCESS: ::c_short = 7;
 pub const SHUTDOWN_TIME: ::c_short = 8;
 // utmp database types
 pub const UTXDB_ACTIVE: ::c_int = 0;
-pub const UTXDB_LASTLOGIN: ::c_int = 1;
 pub const UTXDB_LOG: ::c_int = 2;
 
 pub const LC_COLLATE_MASK: ::c_int = 1 << 0;
diff --git a/src/unix/bsd/netbsdlike/netbsd/mod.rs b/src/unix/bsd/netbsdlike/netbsd/mod.rs
index 8eab8e4233da4..e6cb94e80898f 100644
--- a/src/unix/bsd/netbsdlike/netbsd/mod.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/mod.rs
@@ -1730,7 +1730,6 @@ pub const DCCP_OPT_CONFIRM_L: ::c_int = 33;
 pub const DCCP_OPT_CHANGE_R: ::c_int = 34;
 pub const DCCP_OPT_CONFIRM_R: ::c_int = 35;
 pub const DCCP_OPT_INIT_COOKIE: ::c_int = 36;
-pub const DCCP_OPT_NDP_COUNT: ::c_int = 37;
 pub const DCCP_OPT_ACK_VECTOR0: ::c_int = 38;
 pub const DCCP_OPT_ACK_VECTOR1: ::c_int = 39;
 pub const DCCP_OPT_RECV_BUF_DROPS: ::c_int = 40;
@@ -1757,7 +1756,6 @@ pub const DCCP_MAXSEG: ::c_int = 4;
 pub const DCCP_SERVICE: ::c_int = 8;
 
 pub const DCCP_NDP_LIMIT: ::c_int = 16;
-pub const DCCP_SEQ_NUM_LIMIT: ::c_int = 16777216;
 pub const DCCP_MAX_OPTIONS: ::c_int = 32;
 pub const DCCP_MAX_PKTS: ::c_int = 100;
 
diff --git a/src/unix/haiku/native.rs b/src/unix/haiku/native.rs
index 3d266deb56721..27785a5ed93dd 100644
--- a/src/unix/haiku/native.rs
+++ b/src/unix/haiku/native.rs
@@ -808,7 +808,6 @@ pub const B_RESOURCE_UNAVAILABLE: status_t = B_MEDIA_ERROR_BASE + 3;
 pub const B_BAD_SUBSCRIBER: status_t = B_MEDIA_ERROR_BASE + 4;
 pub const B_SUBSCRIBER_NOT_ENTERED: status_t = B_MEDIA_ERROR_BASE + 5;
 pub const B_BUFFER_NOT_AVAILABLE: status_t = B_MEDIA_ERROR_BASE + 6;
-pub const B_LAST_BUFFER_ERROR: status_t = B_MEDIA_ERROR_BASE + 7;
 
 pub const B_MEDIA_SYSTEM_FAILURE: status_t = B_MEDIA_ERROR_BASE + 100;
 pub const B_MEDIA_BAD_NODE: status_t = B_MEDIA_ERROR_BASE + 101;
@@ -835,7 +834,6 @@ pub const B_MEDIA_BAD_CLIP_FORMAT: status_t = B_MEDIA_ERROR_BASE + 121;
 pub const B_MEDIA_ADDON_FAILED: status_t = B_MEDIA_ERROR_BASE + 122;
 pub const B_MEDIA_ADDON_DISABLED: status_t = B_MEDIA_ERROR_BASE + 123;
 pub const B_MEDIA_CHANGE_IN_PROGRESS: status_t = B_MEDIA_ERROR_BASE + 124;
-pub const B_MEDIA_STALE_CHANGE_COUNT: status_t = B_MEDIA_ERROR_BASE + 125;
 pub const B_MEDIA_ADDON_RESTRICTED: status_t = B_MEDIA_ERROR_BASE + 126;
 pub const B_MEDIA_NO_HANDLER: status_t = B_MEDIA_ERROR_BASE + 127;
 pub const B_MEDIA_DUPLICATE_FORMAT: status_t = B_MEDIA_ERROR_BASE + 128;
diff --git a/src/unix/hurd/mod.rs b/src/unix/hurd/mod.rs
index 5cc6992d32cae..f3abba8473acd 100644
--- a/src/unix/hurd/mod.rs
+++ b/src/unix/hurd/mod.rs
@@ -3375,7 +3375,6 @@ pub const TCP_FIN_WAIT2: ::c_uint = 5;
 pub const TCP_TIME_WAIT: ::c_uint = 6;
 pub const TCP_CLOSE: ::c_uint = 7;
 pub const TCP_CLOSE_WAIT: ::c_uint = 8;
-pub const TCP_LAST_ACK: ::c_uint = 9;
 pub const TCP_LISTEN: ::c_uint = 10;
 pub const TCP_CLOSING: ::c_uint = 11;
 
diff --git a/src/unix/linux_like/android/mod.rs b/src/unix/linux_like/android/mod.rs
index ef8c2ccaa4fde..49c89d4f777b7 100644
--- a/src/unix/linux_like/android/mod.rs
+++ b/src/unix/linux_like/android/mod.rs
@@ -1997,7 +1997,6 @@ pub const NFNL_SUBSYS_CTNETLINK_TIMEOUT: ::c_int = 8;
 pub const NFNL_SUBSYS_CTHELPER: ::c_int = 9;
 pub const NFNL_SUBSYS_NFTABLES: ::c_int = 10;
 pub const NFNL_SUBSYS_NFT_COMPAT: ::c_int = 11;
-pub const NFNL_SUBSYS_COUNT: ::c_int = 12;
 
 pub const NFNL_MSG_BATCH_BEGIN: ::c_int = NLMSG_MIN_TYPE;
 pub const NFNL_MSG_BATCH_END: ::c_int = NLMSG_MIN_TYPE + 1;
@@ -2343,10 +2342,8 @@ pub const NF_IP_PRI_NAT_DST: ::c_int = -100;
 pub const NF_IP_PRI_FILTER: ::c_int = 0;
 pub const NF_IP_PRI_SECURITY: ::c_int = 50;
 pub const NF_IP_PRI_NAT_SRC: ::c_int = 100;
-pub const NF_IP_PRI_SELINUX_LAST: ::c_int = 225;
 pub const NF_IP_PRI_CONNTRACK_HELPER: ::c_int = 300;
 pub const NF_IP_PRI_CONNTRACK_CONFIRM: ::c_int = ::INT_MAX;
-pub const NF_IP_PRI_LAST: ::c_int = ::INT_MAX;
 
 // linux/netfilter_ipv6.h
 pub const NF_IP6_PRE_ROUTING: ::c_int = 0;
@@ -2366,9 +2363,7 @@ pub const NF_IP6_PRI_NAT_DST: ::c_int = -100;
 pub const NF_IP6_PRI_FILTER: ::c_int = 0;
 pub const NF_IP6_PRI_SECURITY: ::c_int = 50;
 pub const NF_IP6_PRI_NAT_SRC: ::c_int = 100;
-pub const NF_IP6_PRI_SELINUX_LAST: ::c_int = 225;
 pub const NF_IP6_PRI_CONNTRACK_HELPER: ::c_int = 300;
-pub const NF_IP6_PRI_LAST: ::c_int = ::INT_MAX;
 
 // linux/netfilter_ipv6/ip6_tables.h
 pub const IP6T_SO_ORIGINAL_DST: ::c_int = 80;
@@ -3139,7 +3134,6 @@ pub const IFLA_LINKMODE: ::c_ushort = 17;
 pub const IFLA_LINKINFO: ::c_ushort = 18;
 pub const IFLA_NET_NS_PID: ::c_ushort = 19;
 pub const IFLA_IFALIAS: ::c_ushort = 20;
-pub const IFLA_NUM_VF: ::c_ushort = 21;
 pub const IFLA_VFINFO_LIST: ::c_ushort = 22;
 pub const IFLA_STATS64: ::c_ushort = 23;
 pub const IFLA_VF_PORTS: ::c_ushort = 24;
@@ -3149,8 +3143,6 @@ pub const IFLA_GROUP: ::c_ushort = 27;
 pub const IFLA_NET_NS_FD: ::c_ushort = 28;
 pub const IFLA_EXT_MASK: ::c_ushort = 29;
 pub const IFLA_PROMISCUITY: ::c_ushort = 30;
-pub const IFLA_NUM_TX_QUEUES: ::c_ushort = 31;
-pub const IFLA_NUM_RX_QUEUES: ::c_ushort = 32;
 pub const IFLA_CARRIER: ::c_ushort = 33;
 pub const IFLA_PHYS_PORT_ID: ::c_ushort = 34;
 pub const IFLA_CARRIER_CHANGES: ::c_ushort = 35;
@@ -3167,7 +3159,6 @@ pub const IFLA_NEW_NETNSID: ::c_ushort = 45;
 pub const IFLA_IF_NETNSID: ::c_ushort = 46;
 pub const IFLA_TARGET_NETNSID: ::c_ushort = IFLA_IF_NETNSID;
 pub const IFLA_CARRIER_UP_COUNT: ::c_ushort = 47;
-pub const IFLA_CARRIER_DOWN_COUNT: ::c_ushort = 48;
 pub const IFLA_NEW_IFINDEX: ::c_ushort = 49;
 pub const IFLA_MIN_MTU: ::c_ushort = 50;
 pub const IFLA_MAX_MTU: ::c_ushort = 51;
@@ -3406,7 +3397,6 @@ pub const VM_HUGETLB_PAGES: ::c_int = 18;
 pub const VM_SWAPPINESS: ::c_int = 19;
 pub const VM_LOWMEM_RESERVE_RATIO: ::c_int = 20;
 pub const VM_MIN_FREE_KBYTES: ::c_int = 21;
-pub const VM_MAX_MAP_COUNT: ::c_int = 22;
 pub const VM_LAPTOP_MODE: ::c_int = 23;
 pub const VM_BLOCK_DUMP: ::c_int = 24;
 pub const VM_HUGETLB_GROUP: ::c_int = 25;
diff --git a/src/unix/linux_like/linux/mod.rs b/src/unix/linux_like/linux/mod.rs
index 125a4129ef61f..73bd3d1b37c6d 100644
--- a/src/unix/linux_like/linux/mod.rs
+++ b/src/unix/linux_like/linux/mod.rs
@@ -2297,7 +2297,6 @@ pub const IFLA_LINKMODE: ::c_ushort = 17;
 pub const IFLA_LINKINFO: ::c_ushort = 18;
 pub const IFLA_NET_NS_PID: ::c_ushort = 19;
 pub const IFLA_IFALIAS: ::c_ushort = 20;
-pub const IFLA_NUM_VF: ::c_ushort = 21;
 pub const IFLA_VFINFO_LIST: ::c_ushort = 22;
 pub const IFLA_STATS64: ::c_ushort = 23;
 pub const IFLA_VF_PORTS: ::c_ushort = 24;
@@ -2307,8 +2306,6 @@ pub const IFLA_GROUP: ::c_ushort = 27;
 pub const IFLA_NET_NS_FD: ::c_ushort = 28;
 pub const IFLA_EXT_MASK: ::c_ushort = 29;
 pub const IFLA_PROMISCUITY: ::c_ushort = 30;
-pub const IFLA_NUM_TX_QUEUES: ::c_ushort = 31;
-pub const IFLA_NUM_RX_QUEUES: ::c_ushort = 32;
 pub const IFLA_CARRIER: ::c_ushort = 33;
 pub const IFLA_PHYS_PORT_ID: ::c_ushort = 34;
 pub const IFLA_CARRIER_CHANGES: ::c_ushort = 35;
@@ -2324,8 +2321,6 @@ pub const IFLA_EVENT: ::c_ushort = 44;
 pub const IFLA_NEW_NETNSID: ::c_ushort = 45;
 pub const IFLA_IF_NETNSID: ::c_ushort = 46;
 pub const IFLA_TARGET_NETNSID: ::c_ushort = IFLA_IF_NETNSID;
-pub const IFLA_CARRIER_UP_COUNT: ::c_ushort = 47;
-pub const IFLA_CARRIER_DOWN_COUNT: ::c_ushort = 48;
 pub const IFLA_NEW_IFINDEX: ::c_ushort = 49;
 pub const IFLA_MIN_MTU: ::c_ushort = 50;
 pub const IFLA_MAX_MTU: ::c_ushort = 51;
@@ -2463,13 +2458,7 @@ pub const RENAME_WHITEOUT: ::c_uint = 4;
 // netinet/in.h
 // NOTE: These are in addition to the constants defined in src/unix/mod.rs
 
-#[deprecated(
-    since = "0.2.80",
-    note = "This value was increased in the newer kernel \
-            and we'll change this following upstream in the future release. \
-            See #1896 for more info."
-)]
-pub const IPPROTO_MAX: ::c_int = 256;
+pub const IPPROTO_MAX: ::c_int = 263;
 
 // System V IPC
 pub const IPC_PRIVATE: ::key_t = 0;
@@ -3032,7 +3021,6 @@ pub const NFNL_SUBSYS_CTHELPER: ::c_int = 9;
 pub const NFNL_SUBSYS_NFTABLES: ::c_int = 10;
 pub const NFNL_SUBSYS_NFT_COMPAT: ::c_int = 11;
 pub const NFNL_SUBSYS_HOOK: ::c_int = 12;
-pub const NFNL_SUBSYS_COUNT: ::c_int = 13;
 
 pub const NFNL_MSG_BATCH_BEGIN: ::c_int = NLMSG_MIN_TYPE;
 pub const NFNL_MSG_BATCH_END: ::c_int = NLMSG_MIN_TYPE + 1;
@@ -3321,10 +3309,8 @@ pub const NF_IP_PRI_NAT_DST: ::c_int = -100;
 pub const NF_IP_PRI_FILTER: ::c_int = 0;
 pub const NF_IP_PRI_SECURITY: ::c_int = 50;
 pub const NF_IP_PRI_NAT_SRC: ::c_int = 100;
-pub const NF_IP_PRI_SELINUX_LAST: ::c_int = 225;
 pub const NF_IP_PRI_CONNTRACK_HELPER: ::c_int = 300;
 pub const NF_IP_PRI_CONNTRACK_CONFIRM: ::c_int = ::INT_MAX;
-pub const NF_IP_PRI_LAST: ::c_int = ::INT_MAX;
 
 // linux/netfilter_ipv6.h
 pub const NF_IP6_PRE_ROUTING: ::c_int = 0;
@@ -3344,9 +3330,7 @@ pub const NF_IP6_PRI_NAT_DST: ::c_int = -100;
 pub const NF_IP6_PRI_FILTER: ::c_int = 0;
 pub const NF_IP6_PRI_SECURITY: ::c_int = 50;
 pub const NF_IP6_PRI_NAT_SRC: ::c_int = 100;
-pub const NF_IP6_PRI_SELINUX_LAST: ::c_int = 225;
 pub const NF_IP6_PRI_CONNTRACK_HELPER: ::c_int = 300;
-pub const NF_IP6_PRI_LAST: ::c_int = ::INT_MAX;
 
 // linux/netfilter_ipv6/ip6_tables.h
 pub const IP6T_SO_ORIGINAL_DST: ::c_int = 80;
@@ -3676,7 +3660,6 @@ pub const IW_MICFAILURE_KEY_ID: ::c_ulong = 0x00000003;
 pub const IW_MICFAILURE_GROUP: ::c_ulong = 0x00000004;
 pub const IW_MICFAILURE_PAIRWISE: ::c_ulong = 0x00000008;
 pub const IW_MICFAILURE_STAKEY: ::c_ulong = 0x00000010;
-pub const IW_MICFAILURE_COUNT: ::c_ulong = 0x00000060;
 
 pub const IW_ENC_CAPA_WPA: ::c_ulong = 0x00000001;
 pub const IW_ENC_CAPA_WPA2: ::c_ulong = 0x00000002;
@@ -5007,7 +4990,6 @@ pub const VM_HUGETLB_PAGES: ::c_int = 18;
 pub const VM_SWAPPINESS: ::c_int = 19;
 pub const VM_LOWMEM_RESERVE_RATIO: ::c_int = 20;
 pub const VM_MIN_FREE_KBYTES: ::c_int = 21;
-pub const VM_MAX_MAP_COUNT: ::c_int = 22;
 pub const VM_LAPTOP_MODE: ::c_int = 23;
 pub const VM_BLOCK_DUMP: ::c_int = 24;
 pub const VM_HUGETLB_GROUP: ::c_int = 25;
diff --git a/src/unix/nto/neutrino.rs b/src/unix/nto/neutrino.rs
index 1a6f7da9cece2..b110dc79d4470 100644
--- a/src/unix/nto/neutrino.rs
+++ b/src/unix/nto/neutrino.rs
@@ -467,7 +467,6 @@ pub const _NTO_INTR_SPARE: u32 = 2147483647;
 
 pub const _NTO_HOOK_IDLE: u32 = 2147418113;
 pub const _NTO_HOOK_OVERDRIVE: u32 = 2147418114;
-pub const _NTO_HOOK_LAST: u32 = 2147418114;
 pub const _NTO_HOOK_IDLE2_FLAG: u32 = 32768;
 
 pub const _NTO_IH_CMD_SLEEP_SETUP: u32 = 1;
diff --git a/src/unix/solarish/mod.rs b/src/unix/solarish/mod.rs
index d710c7f60b1bb..89a4d91e83600 100644
--- a/src/unix/solarish/mod.rs
+++ b/src/unix/solarish/mod.rs
@@ -1946,7 +1946,6 @@ pub const _PC_ACCESS_FILTERING: ::c_int = 25;
 pub const _PC_TIMESTAMP_RESOLUTION: ::c_int = 26;
 pub const _PC_FILESIZEBITS: ::c_int = 67;
 pub const _PC_XATTR_ENABLED: ::c_int = 100;
-pub const _PC_LAST: ::c_int = 101;
 pub const _PC_XATTR_EXISTS: ::c_int = 101;
 
 pub const _SC_ARG_MAX: ::c_int = 1;
@@ -2533,7 +2532,6 @@ pub const LGRP_COOKIE_NONE: ::lgrp_cookie_t = 0;
 pub const LGRP_AFF_NONE: ::lgrp_affinity_t = 0x0;
 pub const LGRP_AFF_WEAK: ::lgrp_affinity_t = 0x10;
 pub const LGRP_AFF_STRONG: ::lgrp_affinity_t = 0x100;
-pub const LGRP_RSRC_COUNT: ::lgrp_rsrc_t = 2;
 pub const LGRP_RSRC_CPU: ::lgrp_rsrc_t = 0;
 pub const LGRP_RSRC_MEM: ::lgrp_rsrc_t = 1;
 pub const LGRP_CONTENT_ALL: ::lgrp_content_t = 0;