ensure mtu is in the ipif substitution set

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/hippotatlib/__init__.py b/hippotatlib/__init__.py
index 2fa3008..de939c8 100644 (file)
--- a/hippotatlib/__init__.py
+++ b/hippotatlib/__init__.py
@@ -577,6 +577,9 @@ def cfg_process_ipif(c, sections, varmap):
     try: v = getattr(c, s)
     except AttributeError: continue
     setattr(c, d, v)
+  for d in ('mtu',):
+    v = cfg_search(cfg.get, d, sections)
+    setattr(c, d, v)
 
   #print('CFGIPIF',repr((varmap, sections, c.__dict__)),file=sys.stderr)