Failed do start Keycloak server – IP_MULTICAST_IF: address not bound

Failed to start Keycloak – Version 11.0.2 on Centos 7

bad argument for IP_MULTICAST_IF: address not bound to any interface

In an attempt to solve this case, searches always return to add the parameter “ = true”. But for me, it didn’t solve.

The only way that solved my problem was to edit the /etc/sysctl.conf file. disabling IPV6.

Add the following at the bottom of the file:

net.ipv6.conf.all.disable_ipv6 = 1

net.ipv6.conf.default.disable_ipv6 = 1

net.ipv6.conf.lo.disable_ipv6 = 1

Save and close the file.

Reboot the machine.