diff --git a/share/man/man4/igc.4 b/share/man/man4/igc.4
index bb79fbe5a8fa..db88aa4ca725 100644
--- a/share/man/man4/igc.4
+++ b/share/man/man4/igc.4
@@ -1,167 +1,167 @@
 .\"-
 .\" Copyright 2021 Intel Corp
 .\" Copyright 2021 Rubicon Communications, LLC (Netgate)
 .\" SPDX-License-Identifier: BSD-3-Clause
 .\"
 .\" $FreeBSD$
 .\"
 .Dd May 10, 2021
-.Dt IGC
+.Dt IGC 4
 .Os
 .Sh NAME
 .Nm igc
 .Nd "Intel Ethernet Controller I225 driver"
 .Sh SYNOPSIS
 To compile this driver into the kernel,
 place the following lines in your
 kernel configuration file:
 .Bd -ragged -offset indent
 .Cd "device iflib"
 .Cd "device igc"
 .Ed
 .Pp
 Alternatively, to load the driver as a
 module at boot time, place the following line in
 .Xr loader.conf 5 :
 .Bd -literal -offset indent
 if_igc_load="YES"
 .Ed
 .Sh DESCRIPTION
 The
 .Nm
 driver provides support for any PCI Express adapter or LOM (LAN
 On Motherboard) based on the Intel I225 Multi Gigabit Controller.
 The driver supports Transmit/Receive checksum offload, Jumbo Frames,
 MSI/MSI-X, TSO, and RSS.
 .Pp
 Support for Jumbo Frames is provided via the interface MTU setting.
 Selecting an MTU larger than 1500 bytes with the
 .Xr ifconfig 8
 utility
 configures the adapter to receive and transmit Jumbo Frames.
 The maximum MTU size for Jumbo Frames is 9216 bytes.
 .Pp
 This driver version supports VLAN hardware insertion / extraction, and
 VLAN checksum offload.
 For information on enabling VLANs, see
 .Xr ifconfig 8 .
 The
 .Nm
 driver supports the following media types:
 .Bl -tag -width ".Cm 10baseT/UTP"
 .It Cm autoselect
 Enables auto-negotiation for speed and duplex.
 .It Cm 10baseT/UTP
 Sets 10Mbps operation.
 Use the
 .Cm mediaopt
 option to select
 .Cm half-duplex
 mode.
 .It Cm 100baseTX
 Sets 100Mbps operation.
 Use the
 .Cm mediaopt
 option to select
 .Cm half-duplex
 mode.
 .It Cm 1000baseT
 Sets 1000Mbps operation.
 Only
 .Cm full-duplex
 mode is supported at this speed.
 .It Cm 2500baseT
 Sets 2500Mbps operation.
 Only
 .Cm full-duplex
 mode is supported at this speed.
 .El
 .Pp
 .Sh HARDWARE
 The
 .Nm
 driver supports the following models:
 .Pp
 .Bl -bullet -compact
 .It
 I225-LM
 .It
 I225-V
 .It
 I225-IT
 .It
 I225-K
 .El
 .Sh LOADER TUNABLES
 Tunables can be set at the
 .Xr loader 8
 prompt before booting the kernel or stored in
 .Xr loader.conf 5 .
 .Bl -tag -width indent
 .It Va hw.igc.igc_disable_crc_stripping
 Disable or enable hardware stripping of CRC field.
 This is mostly useful on BMC/IPMI shared interfaces where stripping the
 CRC causes remote access over IPMI to fail.
 Default 0 (enabled).
 .It Va hw.igc.rx_int_delay
 This value delays the generation of receive interrupts in units
 of 1.024 microseconds.
 The default value is 0, since adapters may hang with this feature being
 enabled.
 .It Va hw.igc.rx_abs_int_delay
 If hw.igc.rx_int_delay is non-zero, this tunable limits the
 maximum delay in which a receive interrupt is generated.
 .It Va hw.igc.tx_int_delay
 This value delays the generation of transmit interrupts in units
 of 1.024 microseconds.
 The default value is 64.
 .It Va hw.igc.tx_abs_int_delay
 If hw.igc.tx_int_delay is non-zero, this tunable limits the
 maximum delay in which a transmit interrupt is generated.
 .It Va hw.igc.sbp
 Show bad packets when in promiscuous mode.
 Default is false.
 .It Va hw.igc.rx_process_limit
 Maximum number of received packets to process at a time.
 Default is 100.
 A value of -1 means unlimited.
 .It Va hw.igc.eee_setting
 Disable or enable Energy Efficient Ethernet.
 Default 1 (disabled).
 .It Va hw.igc.max_interrupt_rate
 Maximum device interrupts per second.
 The default is 8000.
 .El
 .Sh DIAGNOSTICS
 .Bl -diag
 .It "igc%d: Hardware Initialization Failed"
 A fatal initialization error has occurred.
 .It "igc%d: Unable to allocate bus resource: memory"
 A fatal initialization error has occurred.
 .It "igc%d: Invalid MAC address"
 The MAC address programmed into the EEPROM is either empty or a multicast/broadcast
 address.
 .El
 .Sh SEE ALSO
 .Xr altq 4 ,
 .Xr arp 4 ,
 .Xr iflib 4 ,
 .Xr netintro 4 ,
 .Xr ng_ether 4 ,
 .Xr vlan 4 ,
 .Xr ifconfig 8
 .Sh HISTORY
 The
 .Nm
 device driver first appeared in
 .Fx 14.0 .
 .Sh AUTHORS
 .An -nosplit
 The
 .Nm
 was originally written by
 .An Intel Corporation
 and converted to the
 .Xr iflib 4
 framework by
 .An Netgate .