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