probe::netfilter.ip.pre_routing — Called before an IP packet is routed
netfilter.ip.pre_routing
nf_acceptConstant used to signify an 'accept' verdict
nf_queueConstant used to signify a 'queue' verdict
iphdrAddress of IP header
nf_repeatConstant used to signify a 'repeat' verdict
ipproto_udpConstant used to signify that the packet protocol is UDP
lengthThe length of the packet buffer contents, in bytes
pfProtocol family - either 'ipv4' or 'ipv6'
indev_nameName of network device packet was received on (if known)
urgTCP URG flag (if protocol is TCP; ipv4 only)
finTCP FIN flag (if protocol is TCP; ipv4 only)
nf_stopConstant used to signify a 'stop' verdict
rstTCP RST flag (if protocol is TCP; ipv4 only)
pshTCP PSH flag (if protocol is TCP; ipv4 only)
saddrA string representing the source IP address
outdev_nameName of network device packet will be routed to (if known)
nf_dropConstant used to signify a 'drop' verdict
ackTCP ACK flag (if protocol is TCP; ipv4 only)
indevAddress of net_device representing input device, 0 if unknown
sportTCP or UDP source port (ipv4 only)
familyIP address family
daddrA string representing the destination IP address
dportTCP or UDP destination port (ipv4 only)
protocolPacket protocol from driver (ipv4 only)
outdevAddress of net_device representing output device, 0 if unknown
synTCP SYN flag (if protocol is TCP; ipv4 only)
ipproto_tcpConstant used to signify that the packet protocol is TCP
nf_stolenConstant used to signify a 'stolen' verdict