Upgrade from 9.14 to 9.16 - transfer-source with low source port no longer works.
ingeborg.hellemo at uit.no
Tue May 26 09:38:20 UTC 2020
This morning I upgraded from BIND 9.14.11 to 9.16.3 via FreeBSD ports.
Then I realize that my slave server no longer transfer zones from the master.
The zone transfers worked as expected before the upgrade.
There are no error messages. The slave receives notifies from the master:
May 26 09:40:35 ludvigsen named: client @0x81d593f68
22.214.171.124#24673: received notify for zone 'av.uit.no'
May 26 09:40:35 ludvigsen named: zone av.uit.no/IN: notify from
126.96.36.199#24673: serial 2020052600
I can do a 'rndc reload <zone>' without errors:
May 26 09:57:29 ludvigsen named: received control channel command
If I do a full 'rndc reload' I finally get an error:
May 26 11:08:14 ludvigsen named: unable to create dispatch for reserved
port 188.8.131.52#53: permission denied
Since this is a host with serveral virtual interfaces this address/port is set
transfer-source 184.108.40.206 port 53;
The solution was to remove the 'port 53' part of the config,
Finally, the question:
Has there been some change in when named changes user id and drops privilege
from root? Or some other changes that can explain the error?
Ingeborg Østrem Hellemo -- ingeborg.hellemo at uit.no
Dep. of Information Technology --- Univ. of Tromsø
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