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Index: share/man/man4/icmp.4
===================================================================
--- share/man/man4/icmp.4
+++ share/man/man4/icmp.4
@@ -28,7 +28,7 @@
.\" @(#)icmp.4 8.1 (Berkeley) 6/5/93
.\" $FreeBSD$
.\"
-.Dd July 20, 2022
+.Dd July 31, 2022
.Dt ICMP 4
.Os
.Sh NAME
@@ -153,14 +153,15 @@
.It 2 Ta auth-fail Ta photuris Ta "Authentication failed"
.It 3 Ta decrypt-fail Ta photuris Ta "Decryption failed"
.El
-.Ss MIB Variables
+.Ss MIB (sysctl) Variables
The
.Tn ICMP
protocol implements a number of variables in the
.Va net.inet.icmp
branch of the
.Xr sysctl 3
-MIB.
+MIB, and which can be read or modified with
+.Xr sysctl 8 .
.Bl -tag -width ".Va icmplim_output"
.It Va bmcastecho
.Pq Vt boolean
@@ -200,6 +201,9 @@
Number of bytes from original packet to quote in ICMP reply.
This number is internally enforced to be at least 8 bytes (per RFC792)
and at most the maximal space left in the ICMP reply mbuf.
+.It Va redirtimeout
+.Pq Vt integer
+Delay in seconds before expiring route created by ICMP redirect.
.It Va reply_from_interface
.Pq Vt boolean
Use the IP address of the interface the packet came through in for
@@ -241,12 +245,14 @@
.Sh SEE ALSO
.Xr recv 2 ,
.Xr send 2 ,
+.Xr sysctl 3 ,
.Xr inet 4 ,
.Xr intro 4 ,
.Xr ip 4 ,
-.Xr pf.conf 5
+.Xr pf.conf 5 ,
+.Xr sysctl 8
.Sh HISTORY
The
.Nm
-protocol appeared in
-.Bx 4.3 .
+protocol implementation appeared in
+.Bx 4.2 .
Index: share/man/man4/inet.4
===================================================================
--- share/man/man4/inet.4
+++ share/man/man4/inet.4
@@ -28,7 +28,7 @@
.\" From: @(#)inet.4 8.1 (Berkeley) 6/5/93
.\" $FreeBSD$
.\"
-.Dd July 20, 2022
+.Dd July 31, 2022
.Dt INET 4
.Os
.Sh NAME
@@ -157,7 +157,7 @@
.Xr getifaddrs 3
API.
.El
-.Ss MIB Variables
+.Ss MIB (sysctl) Variables
In addition to the variables supported by the transport protocols in
.Va net.inet
(for which the respective manual pages may be consulted),
@@ -165,7 +165,8 @@
.Va net.inet.ip
branch of the
.Xr sysctl 3
-MIB.
+MIB, and which can be read or modified with
+.Xr sysctl 8 .
The following general variables are defined:
.Bl -tag -width ".Va accept_sourceroute"
.It Va accept_sourceroute
@@ -176,9 +177,15 @@
.It Va allow_net240
Boolean: allow experimental use of addresses in 240.0.0.0/4 as endpoints,
and allow forwarding of packets with these addresses.
+.It Va curfrags
+Integer: Current number of IPv4 fragments across all reassembly queues
+in all VNETs (read only).
.It Va forwarding
Boolean: enable/disable forwarding of IP packets.
Defaults to off.
+.It Va fragpackets
+Integer: Current number of IPv4 fragment reassembly queue entries
+for the VNET (read only).
.It Va loopback_prefixlen
Integer: prefix length of the address space reserved for loopback purposes.
The default is 8, meaning that 127.0.0.0/8 is reserved for loopback,
@@ -216,6 +223,20 @@
in the reassembly queue for a packet.
0 means that the host will not accept any fragmented packets for the VNET.
This is a per-VNET limit.
+.It Va mcast
+Node: variables under
+.Va net.inet.ip.mcast
+are documented in
+.Xr ip 4 .
+.It Va no_same_prefix
+Boolean: Refuse to create same prefixes on different interfaces.
+This is a per-VNET value.
+.It Va portrange
+Node: variables under
+.Va net.inet.ip.portrange
+control port ranges used by transport protocols; see
+.Xr ip 4
+for details.
.It Va process_options
Integer: control IP options processing.
By setting this variable to 0, all IP options in the incoming packets
@@ -248,6 +269,15 @@
cycle greatly.
Default is 0 (sequential IP IDs).
IPv6 flow IDs and fragment IDs are always random.
+.It Va random_id_collisions
+Integer: count of IP ID collisions (read only, per-VNET).
+.It Va random_id_period
+Integer: size of the IP ID array, which is the number of previous packets
+for which the IDs are recorded.
+The number must be between 512 and 32768 inclusive.
+This is a per-VNET value.
+.It Va random_id_total
+Integer: count of IP IDs created (read only, per-VNET).
.It Va redirect
Boolean: enable/disable sending of ICMP redirects in response to
.Tn IP
@@ -306,6 +336,7 @@
.Xr route 4 ,
.Xr tcp 4 ,
.Xr udp 4 ,
+.Xr sysctl 8 ,
.Xr pfil 9
.Rs
.%T "An Introductory 4.3 BSD Interprocess Communication Tutorial"
Index: share/man/man4/udp.4
===================================================================
--- share/man/man4/udp.4
+++ share/man/man4/udp.4
@@ -28,7 +28,7 @@
.\" @(#)udp.4 8.1 (Berkeley) 6/5/93
.\" $FreeBSD$
.\"
-.Dd July 20, 2022
+.Dd July 31, 2022
.Dt UDP 4
.Os
.Sh NAME
@@ -110,14 +110,15 @@
.Tn UDP_ENCAP_ESPINUDP
from RFC 3948, defined in
.In netinet/udp.h .
-.Sh MIB VARIABLES
+.Sh MIB (sysctl) Variables
The
.Nm
protocol implements a number of variables in the
.Va net.inet.udp
branch of the
.Xr sysctl 3
-MIB:
+MIB, and which can be read or modified with
+.Xr sysctl 8 :
.Bl -tag -width ".Va log_in_vain"
.It Va blackhole
When a datagram is received on a port where there is no socket

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