RFC 3308
faqs.orgLayer Two Tunneling Protocol (L2TP) Differentiated Services Extension. P. Calhoun, W. Luo, D. McPherson, et al. November 2002.
Layer Two Tunneling Protocol (L2TP) Differentiated Services Extension. P. Calhoun, W. Luo, D. McPherson, et al. November 2002.