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