Can’t get it working with ktls-utils. Got drbd on 3 nodes, all in sync, works just fine.
Then I have added net { tls yes; } on all these nodes. Got this: dmesg [ 1897.683054] drbd beta b2.domain.tld: conn( NetworkFailure -> Unconnected ) [disconnected] [ 1898.469975] drbd beta b0.domain.tld: conn( Unconnected -> Connecting ) [connecting] [ 1898.693995] drbd beta b2.domain.tld: conn( Unconnected -> Connecting ) [connecting] [ 1899.045185] drbd beta tcp:b0.domain.tld: dtt_send_page: size=80 len=80 sent=-95 [ 1899.046412] drbd beta b0.domain.tld: conn( Connecting -> NetworkFailure ) [disconnected] [ 1899.047512] drbd beta b0.domain.tld: Terminating sender thread journalctl -f -u tlshd Apr 10 10:18:12 b1.domain.tld tlshd[8385]: Handshake with b2.domain.tld (192.168.Y.Z) was successful Apr 10 10:18:12 b1.domain.tld tlshd[8386]: Handshake with b2.domain.tld (192.168.Y.Z) was successful Apr 10 10:18:13 b1.domain.tld tlshd[8390]: Handshake with b0.domain.tld (192.168.0.X) was successful Apr 10 10:18:13 b1.domain.tld tlshd[8389]: Handshake with b0.domain.tld (192.168.0.X) was successful ^^ fine on all nodes. On verbose node also this: DBG<1>././lib/cache_mngt.c:302 nl_cache_mngt_unregister: Unregistered cache operations genl/family I have certs generated as follows Encrypted Replication With DRBD - LINBIT <https://linbit.com/blog/encrypted-replication-with-drbd/> just fixed CN to match hostnames drbd-utils 9.27.0-1 ktls-utils 0.10-6 beta role:Secondary disk:UpToDate quorum:no b1.domain.tld connection:Connecting B2.domain.tld connection:NetworkFailure beta role:Secondary disk:UpToDate quorum:no b1.domain.tld connection:Unconnected B2.domain.tls connection:Unconnected I have disabled cram-hmac-alg, data-integrity-alg, shared-secret just in case to keep net section clean with just "tls yes", no luck. Is there anything I have forgotten to add to make it all together?