CONFIG_IP_NF_MATCH_TOS IPV4OPTIONS patch support CONFIG_IP_NF_MATCH_IPV4OPTIONS This option adds a IPV4OPTIONS match. It allows you to filter options like source routing, record route, timestamp and router-altert. If you say Y here, try iptables -m ipv4options --help for more information. If you want to compile it as a module, say M here and read Documentation/modules.txt. If unsure, say `N'.