use_optimistic 50 include/linux/ipv6.h __s32 use_optimistic; use_optimistic 1490 net/ipv6/addrconf.c if (!net->ipv6.devconf_all->use_optimistic && !idev->cnf.use_optimistic) use_optimistic 5450 net/ipv6/addrconf.c array[DEVCONF_USE_OPTIMISTIC] = cnf->use_optimistic; use_optimistic 6704 net/ipv6/addrconf.c .data = &ipv6_devconf.use_optimistic,