NAME

       probe::netfilter.ip.pre_routing - Called before an IP packet is routed

SYNOPSIS

       netfilter.ip.pre_routing

VALUES

       saddr
           A string representing the source IP address

       urg
           TCP URG flag (if protocol is TCP; ipv4 only)

       nf_drop
           Constant used to signify a 'drop' verdict

       indev_name
           Name of network device packet was received on (if known)

       nf_stolen
           Constant used to signify a 'stolen' verdict

       length
           The length of the packet buffer contents, in bytes

       daddr
           A string representing the destination IP address

       nf_repeat
           Constant used to signify a 'repeat' verdict

       protocol
           Packet protocol from driver (ipv4 only)

       syn
           TCP SYN flag (if protocol is TCP; ipv4 only)

       rst
           TCP RST flag (if protocol is TCP; ipv4 only)

       nf_queue
           Constant used to signify a 'queue' verdict

       ipproto_tcp
           Constant used to signify that the packet protocol is TCP

       indev
           Address of net_device representing input device, 0 if unknown

       psh
           TCP PSH flag (if protocol is TCP; ipv4 only)

       outdev_name
           Name of network device packet will be routed to (if known)

       pf
           Protocol family - either 'ipv4' or 'ipv6'

       nf_accept
           Constant used to signify an 'accept' verdict

       ipproto_udp
           Constant used to signify that the packet protocol is UDP

       iphdr
           Address of IP header

       dport
           TCP or UDP destination port (ipv4 only)

       ack
           TCP ACK flag (if protocol is TCP; ipv4 only)

       fin
           TCP FIN flag (if protocol is TCP; ipv4 only)

       outdev
           Address of net_device representing output device, 0 if unknown

       family
           IP address family

       sport
           TCP or UDP source port (ipv4 only)

       nf_stop
           Constant used to signify a 'stop' verdict

SEE ALSO

       tapset::netfilter(3stap)