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Subject: Re: Using IP aliases on a VLAN interface
To: freebsd-questions@freebsd.org
References: <a7c9cecc-d1cc-ca47-dfa6-2769e4226ebb@fyrkat.no>
From: Anton Yuzhaninov <citrin+bsd@citrin.ru>
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Date: Sat, 23 Sep 2017 14:53:50 -0400
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On 09/22/17 03:18, freebsd@jornane.me wrote:
> ifconfig_vlan42="inet6 2001:db8::42 prefixlen 64 mtu 1500"
> ifconfig_vlan42_aliases="\
>     inet6 fd00::dead:beef prefixlen 64 \
>     inet6 2001:db8::babe:cafe prefixlen 128 \
> "

You can write:

ifconfig_vlan42_alias0="inet6 fd00::dead:beef prefixlen 64"
ifconfig_vlan42_alias1="inet6 2001:db8::babe:cafe prefixlen 128"

instead.