What is IE ID 221 in probe response?

[Denis Vlasenko]

Hi folks, Jouni,

A user reported that he is receiving probe responses with unknown
IE ID 221. IE bytes look like this:

DD 04 08 00 28 00

What is this? I googled for it but found nothing...

Just in case, this is a full dump of probe response packet:

fc:      50 00
dur:     02 01
ra:      00 80 C8 AB 41 D4
ta:      00 80 C8 AA CF 07
bssid:   00 80 C8 AA CF 07
seq:     C0 C9
tm:      0B A4 BA 30 01 00 00 00
bcn_int: 64 00
cap_info:51 00
essid:   00 09 62 69 65 73 73 6D 61 6E 6E
rates:   01 05 82 84 8B 96 AC
chan:    03 01 06
???:     DD 04 08 00 28 00

20:25:46 acx: unknown EID 221 in mgmt frame at offset 57

--
vda