My two cent it's something related to tcpmss.
I remember I had some problems like that when I deployed my
strongswan setup (not sure if it was with bacula or any other
app).
If so, this is completely unrelated to bacula, try playing with
iptables TCPMSS tar
Hi,
I recently made several changes to my network, and ever since my bacula backups
to the affected server error out after exactly 15 minutes. I don't know exactly
which change is the culprit, but I suspect it is somehow IPSec-related, and
would appreciate some help troubleshooting the problem.