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