[SR-Users] dns failover and branches

[Juha Heinanen]

I did more some more tests.

The branch route was properly executed before INVITE to the first SRV
destination was sent.  The branch route set some headers, branch flags,
etc.  After the first SRV destination failed, INVITE was sent to the
second SRV destination and the branch route was not re-executed.  In the
second INVITE, headers that were added in branch route were correctly
preserved. However, branch flags that were set in the branch route were
not preserved.  As result, processing of positive reply from the second
srv destination failed.

This looks like a bug to me.  Also branch flags that were set in the
branch route before the first INVITE was sent out should have been
preserved for processing of the second INVITE.

-- Juha