icmp_echo func:cmd_ping_on_ping_end() get wrong ipv6 address (IDFGH-13264)

[gl-liuqingbo]

Answers checklist.

• I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• I have searched the issue tracker for a similar issue and not found a similar issue.

General issue report

1. I use my router to enable ipv6,then conncet esp32 by eth way.
2. esp32 run esp-idf/examples/protocols/icmp_echo
3. ping ipv6 address
4. Log display another ipv6 address, I'm confused.
   Here's log message:
   

[espressif-abhikroy]

@gl-liuqingbo Thanks for reporting the issue.
It's happening because of an issue in ping_sock.c.
The periodic Router Advertisement packet sent by your router was overwriting the destination address.
This can be verified as the updated address is EUI-64 link local address of your router.

I am working on the fix and it will be available soon.

[gl-liuqingbo]

@espressif-abhikroy Thank you for your help, I will wait for the follow-up update

[AxelLin]

I am working on the fix and it will be available soon.

@espressif-abhikroy
I still cannot find this fix. Please also fix it in stable releases.

[espressif-abhikroy]

The fix has been applied and is now available on the master branch. You can refer to the commit with the hash 53ba6e9.