diff --git a/sys/alpha/conf/GENERIC b/sys/alpha/conf/GENERIC
index 5f1dccf5266f..3cf6b6ec23aa 100644
--- a/sys/alpha/conf/GENERIC
+++ b/sys/alpha/conf/GENERIC
@@ -190,6 +190,7 @@ device		faith		# IPv6-to-IPv4 relaying (translation)
 
 # The `bpf' device enables the Berkeley Packet Filter.
 # Be aware of the administrative consequences of enabling this!
+# Note that 'bpf' is required for DHCP.
 device		bpf		# Berkeley packet filter
 
 # USB support
diff --git a/sys/amd64/conf/GENERIC b/sys/amd64/conf/GENERIC
index 36023536b926..54a2c8250a01 100644
--- a/sys/amd64/conf/GENERIC
+++ b/sys/amd64/conf/GENERIC
@@ -239,6 +239,7 @@ device		faith		# IPv6-to-IPv4 relaying (translation)
 
 # The `bpf' device enables the Berkeley Packet Filter.
 # Be aware of the administrative consequences of enabling this!
+# Note that 'bpf' is required for DHCP.
 device		bpf		# Berkeley packet filter
 
 # USB support
diff --git a/sys/conf/NOTES b/sys/conf/NOTES
index 35eb7ca3b519..80f160bc91b6 100644
--- a/sys/conf/NOTES
+++ b/sys/conf/NOTES
@@ -563,7 +563,7 @@ device		musycc	# LMC/SBE LMC1504 quad T1/E1
 #  The `bpf' device enables the Berkeley Packet Filter.  Be
 #  aware of the legal and administrative consequences of enabling this
 #  option.  The number of devices determines the maximum number of
-#  simultaneous BPF clients programs runnable.
+#  simultaneous BPF clients programs runnable.  DHCP requires bpf.
 #  The `disc' device implements a minimal network interface,
 #  which throws away all packets sent and never receives any.  It is
 #  included for testing purposes.  This shows up as the `ds' interface.
diff --git a/sys/i386/conf/GENERIC b/sys/i386/conf/GENERIC
index 8adf9f57eb50..6d61b6e6b3a9 100644
--- a/sys/i386/conf/GENERIC
+++ b/sys/i386/conf/GENERIC
@@ -261,6 +261,7 @@ device		faith		# IPv6-to-IPv4 relaying (translation)
 
 # The `bpf' device enables the Berkeley Packet Filter.
 # Be aware of the administrative consequences of enabling this!
+# Note that 'bpf' is required for DHCP.
 device		bpf		# Berkeley packet filter
 
 # USB support
diff --git a/sys/ia64/conf/GENERIC b/sys/ia64/conf/GENERIC
index 728047e68f5d..88a8f6cea49a 100644
--- a/sys/ia64/conf/GENERIC
+++ b/sys/ia64/conf/GENERIC
@@ -148,4 +148,5 @@ device		uart		# Serial port (UART)
 
 # The `bpf' device enables the Berkeley Packet Filter.
 # Be aware of the administrative consequences of enabling this!
+# Note that 'bpf' is required for DHCP.
 device		bpf		# Berkeley packet filter
diff --git a/sys/pc98/conf/GENERIC b/sys/pc98/conf/GENERIC
index 6d8ff46c6836..1c4469490f6e 100644
--- a/sys/pc98/conf/GENERIC
+++ b/sys/pc98/conf/GENERIC
@@ -227,6 +227,7 @@ device		faith		# IPv6-to-IPv4 relaying (translation)
 
 # The `bpf' device enables the Berkeley Packet Filter.
 # Be aware of the administrative consequences of enabling this!
+# Note that 'bpf' is required for DHCP.
 device		bpf		# Berkeley packet filter
 
 # USB support
diff --git a/sys/powerpc/conf/GENERIC b/sys/powerpc/conf/GENERIC
index 0f87d2307644..67bb0925c224 100644
--- a/sys/powerpc/conf/GENERIC
+++ b/sys/powerpc/conf/GENERIC
@@ -116,6 +116,7 @@ device		faith		# IPv6-to-IPv4 relaying/(translation)
 
 # The `bpf' device enables the Berkeley Packet Filter.
 # Be aware of the administrative consequences of enabling this!
+# Note that 'bpf' is required for DHCP.
 device		bpf		#Berkeley packet filter
 
 # USB support
diff --git a/sys/sparc64/conf/GENERIC b/sys/sparc64/conf/GENERIC
index 7410dace364d..42224bb78098 100644
--- a/sys/sparc64/conf/GENERIC
+++ b/sys/sparc64/conf/GENERIC
@@ -192,6 +192,7 @@ device		faith		# IPv6-to-IPv4 relaying (translation)
 
 # The `bpf' device enables the Berkeley Packet Filter.
 # Be aware of the administrative consequences of enabling this!
+# Note that 'bpf' is required for DHCP.
 device		bpf		# Berkeley packet filter
 
 # USB support