Hi, While I can establish a fast telnet session to port 80: $ telnet www.ietf.org 80 Trying 2001:503:c779:b::d1ad:35b4... Connected to www.ietf.org. Escape character is '^]'. Attempting to browse via MSIE leads to timeouts. Connecting explictly to http://209.173.53.180 to assure IPv4 works fine. Perhaps some Apache issue or PMTU issue? Anyone else experiencing this? We're not seeing issues with any other IPv6 sites/services. Tim _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf