Chef Node Name in Template

I'm trying to set a config file on my server at bootstrap to the value of the Chef node name. Here's my code:

log "Node name: #{Chef::Config[:node_name]}"
template "/etc/sysconfig/network" do
        owner "root"
        group "root"
        mode 00644
        source "network.erb"
        variables(
            :myhostname => Chef::Config[:node_name]
        )
end

network.erb:

NOZEROCONF=true
HOSTNAME=<%= myhostname %>
NETWORKING=yes

The node name is logged correctly from Chef::Config but when I try to set the value in my template I'm getting this error:

undefined local variable or method `myhostname' for #<Chef::Mixin::Template::TemplateContext:0x00...

How can I set the value in the template to the node's node?

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