V_icmp6lim_jitter
if (V_icmp6lim_jitter > 0)
arc4random_uniform(V_icmp6lim_jitter * 2 + 1) -
V_icmp6lim_jitter;
new = lim ? V_icmp6errppslim : V_icmp6lim_jitter;
if (new != 0 && new <= V_icmp6lim_jitter)
V_icmp6lim_jitter = new;
MPASS(V_icmp6errppslim == 0 || V_icmp6errppslim > V_icmp6lim_jitter);