The ldpd template has some errors in the section configuring neighbours:
Traceback (most recent call last): File "/usr/libexec/vyos/conf_mode/protocols_mpls.py", line 144, in <module> generate(c) File "/usr/libexec/vyos/conf_mode/protocols_mpls.py", line 76, in generate mpls['frr_ldpd_config'] = render_to_string('frr/ldpd.frr.j2', mpls) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/vyos/template.py", line 111, in render_to_string rendered = template.render(content) ^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/jinja2/environment.py", line 1301, in render self.environment.handle_exception() File "/usr/lib/python3/dist-packages/jinja2/environment.py", line 936, in handle_exception raise rewrite_traceback_stack(source=source) File "/usr/share/vyos/templates/frr/ldpd.frr.j2", line 17, in top-level template code {% for neighbor, neighbor_config in ldp.neighbor %} ^^^^^^^^^^^^^^^^^^^^^^^^^ ValueError: too many values to unpack (expected 2)
I observed this on a fresh build of the sagitta branch, but the bug is also present on current.