re-add RL_JUMBO_FRAMELEN/RL_JUMBO_MTU but this time use the right values
re-add RL_JUMBO_FRAMELEN/RL_JUMBO_MTU but this time use the right values

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars