git insists in using IPv6

[Julio Merino <jmmv%NetBSD.org@localhost>]

Hello,

I'm not sure if something changed in NetBSD to cause this, but I
cannot longer "git clone" from some hosts because it insists on using
IPv6 addresses and I don't have IPv6 support.  For example:

$ git clone https://code.google.com/p/kyua/
Cloning into 'kyua'...
error: Failed to connect to 2607:f8b0:4004:801::1007: No route to host
while accessing https://code.google.com/p/kyua/info/refs
fatal: HTTP request failed

This is on:

$ uname -a
NetBSD netbsd.meroh.net 6.99.10 NetBSD 6.99.10 (GENERIC) #0: Sat Aug
11 14:57:09 UTC 2012
sysbuild@netbsd:/home/sysbuild/amd64/obj/home/sysbuild/src/sys/arch/amd64/compile/GENERIC
amd64

Any clues or workarounds?

Thanks,