SSH login takes very long time...sometimes

[Hajimu UMEMOTO]

Hi,

>>>>> On Thu, 23 Feb 2006 23:57:27 +0200
>>>>> Rostislav Krasny <rosti.bsd at gmail.com> said:

rosti> Your patch fixed the problem, thank you.

Thank you for testing.  I'll commit it later.

rosti> But during my tests I've found
rosti> another form of "doubling" bug in getaddrinfo(). To test the getaddrinfo()
rosti> behavior I used a program that is attached to this email.
rosti> If hints.ai_socktype == 0 then the getaddrinfo() does the lookup twice,
rosti> even if DNS is reachable. If the latter is the case, returned linked
rosti> list is twice as large than it should be. The hints.ai_socktype seems
rosti> to have the same influence when hints.ai_family is PF_INET6 or
rosti> PF_UNSPEC too.

No, it is expected behavior of getaddrinfo(3).  If hints.ai_socktype
is zero, getaddrinfo(3) returns the entries for all available
socktypes.  Though getaddrinfo(3) returns doubled linkd list,
getaddrinfo(3) does DNS lookup just once for all.  If you don't want
it, you need to specify appropriate socktype explicitly.

Sincerely,

--
Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan
ume at mahoroba.org  ume@{,jp.}FreeBSD.org
http://www.imasy.org/~ume/