Version NUMBER@1 , designed by PERSON@1 and PERSON@2 , appeared as RFC NUMBER@2 in NUMBER@3 -LRB- made obsolete by RFC NUMBER@4 in NUMBER@5 -RRB- , with the intention of overcoming the limitations and security problems of version NUMBER@6 .

Version NUMBER@1 , designed by PERSON@1 and PERSON@2 , appeared as RFC NUMBER@2 in NUMBER@3 -LRB- made obsolete by RFC NUMBER@4 in NUMBER@5 -RRB- , with the intention of overcoming the limitations and security problems of Version NUMBER@6 .
