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