Can't respond to TXT queries

[the-ress]

mdns_query_answer_multicast doesn't let me send an answer to a TXT query.

The answer parametr only takes a single record and even if I put the rest as 'additional', it produces a malformed mDns packet.

[boulabiar]

you use wireshark for this?
I'm interested in mdns communication, do you have references I can look into and help debugging ?