1SELECT @@proxy_protocol_networks;
2@@proxy_protocol_networks
3127.0.0.1,10.0.0.0/8,172.16.0.0/12,192.168.0.0/16,127.0.0.1/32,0:0:0:0:0:0:0:1,FF:FF::0/96,FF::1/128
4SET @@GLOBAL.proxy_protocol_networks='*';
5ERROR HY000: Variable 'proxy_protocol_networks' is a read only variable
6SET @@SESSION.proxy_protocol_networks='foo';
7ERROR HY000: Variable 'proxy_protocol_networks' is a read only variable
8# restart:--proxy-protocol-networks=
9