kdc.conf

[Ivan]

Hello.
I am new to installing and configuring [MIT] Kerberos. Version is 1.16.1.
My question is about a simple test setup of a kdc daemon on Linux OS.
Please tell me what settings I need to make in the kdc.conf file so that 
the kdc-daemon runs the listening socket on:
1. The specified IPv4 address.
2. Did not use TCP, but used only UDP.
I wrote options in the kdc.conf file:
[kdcdefaults]
     kdc_listen = 203.0.113.1:88
     kdc_tcp_listen = ""
but these options are ignored:
$ ss -nlut | grep 88
udp UNCONN 0 0 0.0.0.0:88 0.0.0.0:*
udp UNCONN 0 0 [::]: 88 [::]: *
tcp LISTEN 0 5 0.0.0.0:88 0.0.0.0:*
tcp LISTEN 0 5 [::]: 88 [::]: *
As you can see, IPv6 is used, TCP is used, and the specified IPv4 
address is not used.
Is it possible to customize the use of sockets according to the 
described conditions?
Thank.