I am trying to use nping to ping 8.8.8.8 through an Alcatel W800 modem. I need nping because eventually I will need the ability to set some things like destination-mac. For now, I am just trying to use it like ping as a sanity test, to insure I know how to use the command!
When I nping 8.8.8.8 through other connections, like WiFi, using this command:
nping 8.8.8.8 --icmp --icmp-type echo
I get a response.
However, through the Alcatel modem, I get no response. Now the key part: using the same network setup, if I use just ping, I do get a response.
I made a pcap of both exchanges (ping vs nping), and I see a few differences:
- the packets generated with ping are length 80
- the packets generate with ping have a "Timestamp from icmp data", according to wireshark
Vs nping:
- packets are length 28
- packets don't have a timestamp, even when I include
--icmp-orig-time now, like this:
nping 8.8.8.8 --icmp --icmp-type echo --icmp-orig-time now
So what am I missing to make nping include that timestamp in the outgoing echo packets?
