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