traiter les anciennes occurences de host, même si pas localhost

ulib/debian

@@ -163,9 +163,16 @@ function __network_fix_exim4() {
 
 function __network_hosts() {
     local host="$1" hostname="${1%%.*}" ip="$2"
+    local shost="${host//./\\.}"
     local tmpfile; ac_set_tmpfile tmpfile
-    </etc/hosts sed "/^127\\./s/$hostname\\(\\.[^ $TAB]*\\)\\?[ $TAB]*//g;
-/^127\\.[0-9]\\+\\.[0-9]\\+\\.[0-9]\\+[ $TAB]*\$/d" >"$tmpfile"
+    awkrun </etc/hosts >"$tmpfile" host="$host" hostname="$hostname" ip="$ip" '
+/^[^# \t]/ {
+  gsub("[ \\t]+" host "[ \\t]*", " ")
+  gsub("[ \\t]+" hostname "[ \\t]*", " ")
+  if ($0 ~ /^[^ \t]+[ \t]*$/) next
+  gsub(/[ \t]*$/, "")
+}
+{ print }'
     local sip="${ip//./\\.}" shost="${host//./\\.}"
     if ! quietgrep "^$sip[ $TAB]\\+$shost[ $TAB]\\+$hostname" "$tmpfile"; then
         sed -i "/^$sip[ $TAB]/d" "$tmpfile"