Posted in Uncategorized on May 18th, 2009
For lovers of storing IP addresses as integers in MySQL tables, there’s a snag when doing this for IPv6 addresses. A 128-bit number is too big to stuff into a BIGINT type. All Fs integer equivalent is 340,282,366,920,938,463,463,374,607,431,768,211,455. An unsigned BIGINT tops out at 18,446,744,073,709,551,615. These are your options: Store it as a VARCHAR(39) in […]
Posted in Uncategorized on May 16th, 2009
So here’s a traceroute to the anycast 6to4 address from my parents’ place. It winds up in Frankfurt, Germany! Their upstream, MBO is multihomed to Level3 and Sprint. I assume they’re defaulting to Level3, since the path to the Sprint 6to4 is 120 ms. traceroute to 192.88.99.1 (192.88.99.1), 64 hops max, 40 byte packets 1 […]
Posted in Uncategorized on May 8th, 2009
A few observations with IPv6 fiddling all day long: IPv6 peering is going to be crazy important. Only a couple of our transit providers, Tiscali and Verizon (f/k/a UUnet) will give us native/dual-stack transit. To help ensure independent connectivity we’ll have to turn up v6 peering at our various peering points. With IPv4 the driving […]
