IPv6 replication issues

[nerijus]

Environment:

• OS: CentOS Stream 9
• Dragonfly Version: 1.27.1

/etc/dragonfly/dragonfly.conf is:

--pidfile=/var/run/dragonfly/dragonfly.pid
--log_dir=/var/log/dragonfly
--dir=/var/lib/dragonfly
--max_log_size=20
--version_check=true
--bind=::
--tls
--tls_replication=true
--tls_cert_file=/etc/valkey/redis.server.pem
--tls_key_file=/etc/valkey/redis.server.key
--tls_ca_cert_file=/etc/valkey/redis.ca.pem

If I use ipv4, it works:

127.0.0.1:6379> replicaof 10.0.2.241 6379
OK
127.0.0.1:6379> role
1) "slave"
2) "10.0.2.241"
3) "6379"
4) "online"

ipv6 fails:

127.0.0.1:6379> replicaof [2a05:d018:3ad:6102:566c:b386:1647:xxxx] 6379
(error) ERR could not resolve master dnsNo route to host

Host is reachable, for example:

telnet 2a05:d018:3ad:6102:566c:b386:1647:xxxx 6379
Trying 2a05:d018:3ad:6102:566c:b386:1647:xxxx...
Connected to 2a05:d018:3ad:6102:566c:b386:1647:xxxx.
Escape character is '^]'.

-ERR Bad TLS header, double check if you enabled TLS for your client.

replicaof without [] gives:

127.0.0.1:6379> replicaof 2a05:d018:3ad:6102:566c:b386:1647:xxxx 6379
(error) ERR could not connect to master: Address family not supported by protocol

[nerijus]

If I add line:

--replicaof=[2a05:d018:3ad:6102:566c:b386:1647:xxxx]:6379

to /etc/dragonfly/dragonfly.conf and restart dragonfly, I get:

127.0.0.1:6379> role
1) "slave"
2) "2a05:d018:3ad:6102:566c:b386:1647:xxxx"
3) "6379"
4) "connecting"

/var/log/dragonfly/dragonfly.INFO has lots of lines:

W20250218 22:21:42.415287 27166 replica.cc:213] Error connecting to 2a05:d018:3ad:6102:566c:b386:1647:xxxx:6379 system:97

[BorysTheDev]

@nerijus Thx for report we will check it

[nerijus]

Just other digits or letters of IPV6 address, lets say, 1234.