This could need an update. Is there anything still missing after the recent commits from David?

This item has been reassigned from the project lwIP - A Lightweight TCP/IP stack bugs tracker to your tracker.

The original report is still available at bugs #48818

Following are the information included in the original report:

[field #0]                  Item ID: 48818
[field #1]                 Group ID: 3159
[field #2]              Open/Closed: Open
[field #3]                 Severity: 3 - Normal
[field #4]                  Privacy: Public
[field #9]                 Category: DNS
[field #10]             Submitted by: dziegel
[field #11]              Assigned to: None
[field #12]             Submitted on: Thu 18 Aug 2016 05:29:40 PM GMT
[field #13]                  Summary: Implement missing things in MDNS responder
[field #14]      Original Submission: Things left to implement:

 - Probing/conflict resolution
 - Sending goodbye messages (zero ttl)
 - Checking that source address of unicast requests are on the same network
 - Limiting multicast responses to 1 per second per resource record
 - Fragmenting replies if required
 - Subscribe to netif address/link change events and act on them (currently needs to be done manually)
 - Handling multi-packet known answers
 - Individual known answer detection for all local IPv6 addresses
 - Dynamic size of outgoing packet
[field #16]               Item Group: None
[field #17]                   Status: None
[field #18]        Component Version: None
[field #19]         Operating System: None
[field #20]          Reproducibility: None
[field #21]               Size (loc): None
[field #22]            Fixed Release: None
[field #23]          Planned Release: None
[field #24]                   Effort: 0.00
[field #28]                 Priority: 5 - Normal
[field #31]         Percent Complete: 0%
[field #33]                  Release: None
[field #58]             lwIP version: git head
[field #59]     Custom Select Box #2: None
[field #60]     Custom Select Box #3: None
[field #61]     Custom Select Box #4: None
[field #62]     Custom Select Box #5: None
[field #63]     Custom Select Box #6: None
[field #64]     Custom Select Box #7: None
[field #65]     Custom Select Box #8: None
[field #66]     Custom Select Box #9: None
[field #67]    Custom Select Box #10: None

Things left to implement:

 - Probing/conflict resolution
 - Sending goodbye messages (zero ttl)
 - Checking that source address of unicast requests are on the same network
 - Limiting multicast responses to 1 per second per resource record
 - Fragmenting replies if required
 - Subscribe to netif address/link change events and act on them (currently needs to be done manually)
 - Handling multi-packet known answers
 - Individual known answer detection for all local IPv6 addresses
 - Dynamic size of outgoing packet