On Sunday 17 April 2005 12:35 pm, Hrvoje Niksic wrote: > I've noticed this behavior with IPv6-enabled Wget 1.10: > > --19:10:30-- http://www.deepspace6.net/ > => `index.html' > Resolving www.deepspace6.net... 2001:1418:13:3::1, 192.167.219.83 > Connecting to www.deepspace6.net|2001:1418:13:3::1|:80... failed: No route > to host. Connecting to www.deepspace6.net|192.167.219.83|:80... connected. > HTTP request sent, awaiting response... 200 OK > ... > > Why does getaddrinfo return AAAA records, when Wget specifies > AI_ADDRCONFIG?
that's because your host has a configured IPv6 address (most likely an autoconfigured link local address) but you don't have IPv6 connectivity. > It is not a problem in practice, as Wget correctly handles inability to > connect to the first address, but seeing the error is somewhat annoying, and > it does introduce a slow-down. > > I can, of course, use `-4' or `inet4only=on' to explicitly force IPv4, > but I thought AI_ADDRCONFIG was designed so users wouldn't have to do > that. i agree with you here. unfortunately, AFAIK both linux and *bsd implementations of getaddrinfo present this stupid behaviour. > Note, however, that `host www.deepspace6.net' returns only the IPv4 > address. not for me: [EMAIL PROTECTED] messagexmit]$ host deepspace6.net deepspace6.net has address 192.167.219.83 deepspace6.net has IPv6 address 2001:1418:13:3::1 deepspace6.net mail is handled by 10 deepspace6.net. deepspace6.net mail is handled by 20 mail.ferrara.linux.it. > This discussion from 2003 seems to question the practical usefulness of > AI_ADDRCONFIG: > > http://dict.regex.info/ipv6/v6ops/2003-10.mail/0146.html i agree with itojun when he says that AI_ADDRCONFIG semantics is too vague. but are you suggesting we should not use the AI_ADDRCONFIG hint at all in wget? -- Aequam memento rebus in arduis servare mentem... Mauro Tortonesi University of Ferrara - Dept. of Eng. http://www.ing.unife.it Institute of Human & Machine Cognition http://www.ihmc.us Deep Space 6 - IPv6 for Linux http://www.deepspace6.net Ferrara Linux User Group http://www.ferrara.linux.it
