# Release of probe firmware 4950 (Anchors only)

Fixed a bug in traceroute where a trace was supposed to stop after 5 non-responding hops, but it stopped earlier if the starting hop was not set to 1
Added support for DNS cookies (API/UI support is in the works)
Added support to set EDNS version, flags and options (API/UI support TBD)
Added support to send DNS queries with IPv6 destination option (API/UI support is in the works)
Code shuffles to record timestamps for response time as close as possible to sending and receiving calls