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