It looks like you're new here. If you want to get involved, click one of these buttons!
anyone can help me, How to write secondary ipv6 from he.net on my vps into /etc/network/interfaces?
my OS Debian 10
HE gives you an example config in the dashboard.
To add a second ip, you could use:
iface yourtunnelinterface:1 inet6 static
address your address + /ne
Maybe have a look here: https://wiki.debian.org/NetworkConfiguration
iFog GmbH - Webhosting, DNS Hosting, vServer, IP-Transit, IXP VMs, RIPE LIR, BGP VMs
Tunnelbroker - Free BGP v6/v4 Tunnels