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