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Date: Tue, 20 Mar 2007 15:54:08 +0100
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To: Eric F Crist <mnslinky@gmail.com>
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Cc: freebsd-questions@freebsd.org
Subject: Re: IPv6 Tunnel issues...
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Eric F Crist schrieb:
> [...] I'm performing the configuration as follows:
> 
> ifconfig gif0 create
> ifconfig gif0 tunnel <my IPv4 address> <my ISP IPv4 address>
> ifconfig gif0 inet6 alias aaaa:aaaa:a::a bbbb:bbbb:b::b prefixlen 126
> 
> When I execute the last command, I get:
> ifconfig: ioctl (SIOCAIFADDR): Invalid argument
> 
> [...]

Use a prefix length of 128 instead of 126.

Regards
Björn