On one side MariaDB documentations states for:
max_allowed_packet (server): "If this value is changed, it should be changed on the client side as well."
net_buffer_size (mariadb-dump): "If you increase this variable, you should also ensure that the net_buffer_length variable in the MariaDB server is at least this large."
On the other hand the defaults are:
SQL> SHOW GLOBAL VARIABLES LIKE ...
|max_allowed_packet||16777216||-> conflict with docu|
|net_buffer_length||16384|| -> conflict with docu
mariadb-dump --help | grep -e buffer -e allow
max-allowed-packet 25165824 -> conflict with docu
net-buffer-length 1046528 -> conflict with docu
mariadb --help | grep -e buffer -e allow
max-allowed-packet 16777216 -> OK
net-buffer-length 16384 -> OK
So make the docu fitting the defaults or the other way around...