Support for pcapng interface name

[mika1337]

Question

Hello,

I am using PcapPlusPlus to capture from multiple network interfaces into a single pcapng file.
I have noticed that the resulting pcapng file has no interface information so I dig into the PcapPlusPlus code and also into the LightPcapNg code.

From my understanding two things are needed for interfaces name to work:

• an interface description block which sets the interface name
• an interface_id in the packet header which refers to an interface previously described

Looking into LightPcapNg API it seems you can’t set information on interfaces names, only interface_id can be set.

Am I correct ?
If I am, is there a way using PcapPlusPlus to set interface names in pcapng file ?

Michael

Operating systems

No response

[seladb]

@mika1337 I looked at LightPcapNg code and I can't say for sure, but it seems there is a way to set interface blocks, but as you mentioned - interface name is not included. Even if LighPcapNg supported it, PcapPlusPlus doesn't currently support asking the interface information from the user and passing it to LightPcapNg.

It seems there is some work to be done in order to support this feature, and it doesn't look like an "easy fix".