regen_max_retry

file: /proc/sys/net/ipv6/conf/interface/regen_max_retry
variable: net.ipv6.conf.interface.regen_max_retry
Official reference

Number of attempts before give up attempting to generate valid temporary addresses. Default: 5

Nb: per interface setting (where “interface” is the name of your network interface); “all” is a special interface: changes the settings for all interfaces.

source