SPP_PMTUD_DISABLE 558 include/net/sctp/user.h SPP_PMTUD_DISABLE = 1<<4, /*Disable PMTU discovery*/ SPP_PMTUD_DISABLE 559 include/net/sctp/user.h SPP_PMTUD = SPP_PMTUD_ENABLE | SPP_PMTUD_DISABLE,