in internal/ip/ip_linux.go [46:55]
func getIPHeaderLayerV4(tos DSCPValue, tcpLen uint16, srcIP net.IP, dstIP net.IP) *layers.IPv4 {
return &layers.IPv4{
Version: 4, // IP Version 4
TOS: uint8(tos),
Protocol: layers.IPProtocolTCP,
TTL: defines.IPTTL,
SrcIP: srcIP,
DstIP: dstIP,
}
}