diff --git a/sys/amd64/conf/GENERIC b/sys/amd64/conf/GENERIC
--- a/sys/amd64/conf/GENERIC
+++ b/sys/amd64/conf/GENERIC
@@ -32,6 +32,7 @@
 options 	INET6			# IPv6 communications protocols
 options 	IPSEC_SUPPORT		# Allow kldload of ipsec and tcpmd5
 options		ROUTE_MPATH		# Multipath routing support
+options		FIB_ALGO		# Modular fib lookups
 options 	TCP_OFFLOAD		# TCP offload
 options 	TCP_BLACKBOX		# Enhanced TCP event logging
 options 	TCP_HHOOK		# hhook(9) framework for TCP
diff --git a/sys/arm64/conf/GENERIC b/sys/arm64/conf/GENERIC
--- a/sys/arm64/conf/GENERIC
+++ b/sys/arm64/conf/GENERIC
@@ -32,6 +32,7 @@
 options 	INET6			# IPv6 communications protocols
 options 	IPSEC_SUPPORT		# Allow kldload of ipsec and tcpmd5
 options		ROUTE_MPATH		# Multipath routing support
+options		FIB_ALGO		# Modular fib lookups
 options 	TCP_OFFLOAD		# TCP offload
 options 	TCP_HHOOK		# hhook(9) framework for TCP
 options		TCP_RFC7413		# TCP Fast Open