commit 416f6a315f286a242e78048039b6525cafaabd74
author Arkadiusz Bałys <arkadiusz.balys@nordicsemi.no> Tue Apr 30 15:06:04 2024 +0200
committer GitHub <noreply@github.com> Tue Apr 30 13:06:04 2024 +0000
tree 34c69d0aa45fcf6198fff97446a988cff6ebdad7
parent ffaeaa1827813a1284ff20f9b34898314303df30

[OpenThread] Disable IPv6 interface during erasing persistent info. (#33170)

Apart from disabling Thread, and erasing Persistent Info, we should
disable the IPv6 interface as well and block receiving further
packets.
Otherwise, if we don't reboot the device after erasing Thread
persistent data, we can get a packet and as a result, it causes an
assert during processing AES_ECB
(because crypto keys have been removed).

src/platform/OpenThread/GenericThreadStackManagerImpl_OpenThread.hpp

diff --git a/src/platform/OpenThread/GenericThreadStackManagerImpl_OpenThread.hpp b/src/platform/OpenThread/GenericThreadStackManagerImpl_OpenThread.hpp
index f62b82b..1c14aeb 100644
--- a/src/platform/OpenThread/GenericThreadStackManagerImpl_OpenThread.hpp
+++ b/src/platform/OpenThread/GenericThreadStackManagerImpl_OpenThread.hpp
@@ -1219,6 +1219,7 @@
     ChipLogProgress(DeviceLayer, "Erasing Thread persistent info...");
     Impl()->LockThreadStack();
     otThreadSetEnabled(mOTInst, false);
+    otIp6SetEnabled(mOTInst, false);
     otInstanceErasePersistentInfo(mOTInst);
     Impl()->UnlockThreadStack();
 }