OK Emmanuel, on a les "memes" traceroute. nslookup www.univ-paris13.fr Non-authoritative answer: Name: www.univ-paris13.fr Address: 194.254.164.240 nslookup lipn.univ-paris13.fr Non-authoritative answer: Name: lipn.univ-paris13.fr Address: 194.254.163.24 ^^^^ c'est ce 163 qui doit merder a P13, tous les autres adressages que 163 passent bien (donc mail est OK !?). [de polytechnique ou inria] ping lipn.univ-paris13.fr PING lipn.univ-paris13.fr (194.254.163.24) from 129.104.36.7 : 56(84) bytes of data. --- lipn.univ-paris13.fr ping statistics --- 124 packets transmitted, 0 packets received, 100% packet loss (au bout de 3 min). traceroute to lipn.univ-paris13.fr (194.254.163.24), 30 hops max, 38 byte packets 1 morlusenn (129.104.36.13) 1.098 ms 0.595 ms 0.698 ms 2 10.255.1.4 (10.255.1.4) 1.324 ms 1.030 ms 1.100 ms 3 193.51.183.70 (193.51.183.70) 1.684 ms 1.876 ms 1.716 ms 4 cachan-pos2-0.cssi.renater.fr (193.51.180.121) 2.932 ms 2.200 ms 2.472 ms 5 jussieu-pos2-0.cssi.renater.fr (193.51.180.166) 2.610 ms 2.577 ms 2.385 ms 6 paris13-jussieu.cssi.renater.fr (193.51.182.205) 3.860 ms 3.895 ms 4.097 ms 7 * * * 8 * * * 9 * * * 10 * * * EN REVANCHE : [toujours depuis polytechnique ou INRIA] /usr/sbin/traceroute www.univ-paris13.fr traceroute to www.univ-paris13.fr (194.254.164.240), 30 hops max, 38 byte packets [...] 4 cachan-pos2-0.cssi.renater.fr (193.51.180.121) 3.110 ms 2.532 ms 3.322 ms 5 jussieu-pos2-0.cssi.renater.fr (193.51.180.166) 2.957 ms 2.689 ms 2.552 ms 6 paris13-jussieu.cssi.renater.fr (193.51.182.205) 4.267 ms 3.983 ms 3.976 ms 7 * * * 8 www.univ-paris13.fr (194.254.164.240) 4.637 ms 3.822 ms 4.133 ms