Try to delete network even if vm does not exist

This allows for embedding the repo root inside of, for example, scripts
to make them function properly no matter where they are run from.

templates/boot.ipxe

@@ -12,8 +12,8 @@ goto node_${serial} || exit
 {%- if node.install -%}
 # {{ node.filename }}
 :node_{{ node.serial }}
-{% set ipArg = "ip=" ~ [node.ip, "" , node.gateway, node.netmask, node.hostname, node.interface, "", node.dns[0],  node.dns[1], node.ntp]|join(":") -%}
+{% set ipArg = "ip=" ~ node.ip ~ "::" ~ node.gateway ~ ":" ~ node.netmask ~ ":" ~ node.hostname ~ ":" ~ node.interface ~ "::" ~ node.dns[0] ~ ":" ~ node.dns[1] ~ ":" ~ node.ntp -%}
-{% set kernelArgs = [ipArg, node.kernelArgs|join(" "), node.extraKernelArgs|join(" ")]|join(" ") -%}
+{% set kernelArgs = ipArg ~ " " ~ node.kernelArgs ~ " " ~ node.extraKernelArgs -%}
 imgfree
 kernel https://pxe.factory.talos.dev/image/{{ node.schematicId }}/{{ node.talosVersion }}/kernel-{{ node.arch }} {{ kernelArgs }}
 initrd https://pxe.factory.talos.dev/image/{{ node.schematicId }}/{{ node.talosVersion }}/initramfs-{{ node.arch }}.xz