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