nsd listening on localhost is zone transfer possible transfer ?

hi everyone
i have unbound setup on port 53
and nsd listening on localhost port 53530
i have set up another dns server as a secondary
am i correct to assume that i can't zone transfer because
as the nsd's are listening on localhost
the primary can't reach the secondary ?

i have these errors on the primary
error: xfrd: zone 1.10.10.in-addr.arpa: max notify send count reached, 10.10.1.5 unreachable
error: xfrd: zone forwardzone: max notify send count reached, 10.10.1.5 unreachable

shadrock