Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Take a look at the DRBD log / syslog. You should see "dropping
connection" messages as response to a split brain situation - which will
happen if you plug the replication network cable in active/active. I'm
actually unsure how to solve this - maybe dopd and redundant network
links are an option.
>
> net {
> allow-two-primaries;
> }