Hi, All,
I used the following code snippet on a virtual box ubtunu vm trying to
capture the packet. However, even though "enp3s0" is listed in the device
list, opening it causes an error as follows. The same code runs on a
physical box has no problem opening the NIC.
Any suggestions?
TIA
Devices found:
Name: enp0s3
- IP address: 10.6.105.56
- Subnet mask: ffffff00
- IP address: fe80::d9a:740b:eb92:e270
- Subnet mask: ffffffffffffffff0000000000000000
<snip>
open interface failed
panic: runtime error: invalid memory address or nil pointer dereference
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x4c4606]
goroutine 1 [running]:
panic(0x5313a0, 0xc42000c0a0)
/usr/local/go/src/runtime/panic.go:500 +0x1a1
fmt.Println("Devices found:")
for _, device := range devices {
fmt.Println("\nName: ", device.Name)
//fmt.Println("Description: ", device.Description)
//fmt.Println("Devices addresses: ", device.Description)
for _, address := range device.Addresses {
fmt.Println("- IP address: ", address.IP)
fmt.Println("- Subnet mask: ", address.Netmask)
}
}
// Open device
// handle, err = pcap.OpenLive(device, snapshot_len, promiscuous, timeout)
handle, err = pcap.OpenLive("enp3s0", 1600, true, 100)
//pcap.OpenLive("enp0s8", snapshot_len, promiscuous, timeout)
if err == nil {
fmt.Println("open interface ", device, "successfully")
defer handle.Close()
} else {
fmt.Println("open interface failed")
}
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