Interoperability between TIPC 2.0 and 1.7 is broken. The customer needs to upgrade nodes on a network one at a time. From the TIPC documentation: TIPC 2.0 is designed to interoperate with nodes running TIPC 1.5/1.6/1.7, as long as all nodes belong to the same cluster. This interoperability allows an existing TIPC 1.5/1.6/1.7 cluster to be expanded to include new nodes running TIPC 2.0. Interoperability seems to have been broken by this commit tipc: eliminate race condition at multicast reception” (2015-02-05) https://github.com/torvalds/linux/commit/cb1b728096f54e7408d60fb571944bed00c5b771#diff-42ded0bde4f7e591a8a7100463b4cc1d https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/tipc/bcast.c?id=cb1b728096f54e7408d60fb571944bed00c5b771\ It removes a section of the code intended to receive the broadcasted NAME_DISTRIBUTOR received from pre-2.0 TIPC. Back in 2011, the code evolution was aware that NAME_DISTRIBUTOR had to be handled by the broadcast receiver. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/tipc?id=9f6bdcd4286145e812058e4111e906e9830514d8
This issue is not yet reproduced by the support team.
