Description of problem:

1. rpm -qa |grep mptcpd
   mptcpd-0.8-2.el9.x86_64
2. /usr/libexec/mptcpd -d --notify-flags=existing --addr-flags=subflow --path-manager=addr_adv
   configuration.c:mptcpd_config_create() path manager plugin directory: /usr/lib64/mptcpd
   configuration.c:mptcpd_config_create() default path manager plugin: addr_adv
   configuration.c:mptcpd_config_create() address flags: <<<<<
   configuration.c:mptcpd_config_create() notify flags: <<<<<
   path_manager.c:family_appeared() "mptcp_pm" generic netlink family appeared
   MPTCP address advertiser path manager initialized.
   MPTCP single-subflow-per-interface path manager initialized.
   path_manager.c:dump_addrs_callback() ID sync: 1 | 10.8.1.117
   path_manager.c:dump_addrs_callback() ID sync: 2 | 2620:52:0:800:216:3eff:fe36:acc2
   path_manager.c:dump_addrs_callback() ID sync: 3 | fe80::216:3eff:fe36:acc2
   add_addr: too many addresses or duplicate one
   add_addr: too many addresses or duplicate one
   add_addr: too many addresses or duplicate one

Version-Release number of selected component (if applicable):
mptcpd-0.8-2.el9.x86_64

How reproducible:
always

Steps to Reproduce:
1./usr/libexec/mptcpd -d --notify-flags=existing --addr-flags=subflow --path-manager=addr_adv
2.
3.

Actual results:
configuration.c:mptcpd_config_create() address flags: 
configuration.c:mptcpd_config_create() notify flags: 

Expected results:
configuration.c:mptcpd_config_create() address flags: subflow
configuration.c:mptcpd_config_create() notify flags: existing

Additional info: