sysctl_pmtu_disc
return ipvs->sysctl_pmtu_disc;
int sysctl_pmtu_disc;
ipvs->sysctl_pmtu_disc = 1;
tbl[idx++].data = &ipvs->sysctl_pmtu_disc;
dfp = sysctl_pmtu_disc(ipvs) ? &df : NULL;
if ((rt_mode & IP_VS_RT_MODE_TUNNEL) && !sysctl_pmtu_disc(ipvs))