postfix warnings about ipv6

[George Georgalis <george%galis.org@localhost>]

I have recently configured a flash disk, old install firewall
device to forward mail to a working address.

NetBSD fvpn 4.0_STABLE NetBSD 4.0_STABLE (FVPN) #0: Thu Apr 24 14:28:03 EDT 2008

I know the 4 series isn't supported anymore, but is there a way to
tell postfix to keep quiet with the warnings? They are in every
message from cron: 

mailq: warning: inet_protocols: IPv6 support is disabled: Address family not 
supported by protocol family
mailq: warning: inet_protocols: configuring for IPv4 support only
postqueue: warning: inet_protocols: IPv6 support is disabled: Address family 
not supported by protocol family
postqueue: warning: inet_protocols: configuring for IPv4 support only

sendmail: warning: inet_protocols: IPv6 support is disabled: Address family not 
supported by protocol family
sendmail: warning: inet_protocols: configuring for IPv4 support only
postdrop: warning: inet_protocols: IPv6 support is disabled: Address family not 
supported by protocol family
postdrop: warning: inet_protocols: configuring for IPv4 support only


The kernel has no ipv6 support, this is well known, but I don't
want to rebuild this headless install just yet. And I don't want
to send stderr to dev null, least some other warning come up.

-George