This is a static archive of our old Q&A Site. Please post any new questions and answers at

Can’t decode 802.11 ping reply


Hello, Perhaps this question had been asked before but I've been searching and could not find answer. I performed a ping from wifi client (laptop) and captured raw 802.11 packet via wireless nic interface. I used to WS to decode the packet and was able to see ping request clearly (802.11header, LLC, IP, ICMP, etc):

alt text

However it seemed that WS cannot decoded a ping reply when it is an 802.11 QoS data packet. Here I noticed the different is that the ping reply does have an extra QoS header and LLC had been decoded as WEP (?). Subsequently WS could not decoded the rest as a ping packet. Please let me know how to resolve this issue... Thanks in advance (btw, I am using WS Version 1.10.3 (SVN Rev 53022 from /trunk-1.10) and please pardon my (clumsy) drawing :))

alt text

asked 06 Nov '13, 17:26

dbdiep's gravatar image

accept rate: 0%

One Answer:


For the second packet, Wireshark apparently thinks the second packet has a QoS field when it appears not to. Please file a bug on the Wireshark bugzilla, and attach the capture file if at all possible.

answered 06 Nov '13, 19:51

Guy%20Harris's gravatar image

Guy Harris ♦♦
accept rate: 19%